John Bellum, PhD
Consultant in Optical Coatings, Coherent Technologies, Albuquerque, NM, USA
Research Interests
About
Publications
Electronic-to-vibrational energy transfer in collisions of excited sodium with molecular hydrogen
The Journal of Chemical Physics / Aug 15, 1979
McGuire, P., & Bellum, J. C. (1979). Electronic-to-vibrational energy transfer in collisions of excited sodium with molecular hydrogen. The Journal of Chemical Physics, 71(4), 1975–1976. https://doi.org/10.1063/1.438512
Quantum mechanical theory of collisional ionization in the presence of intense laser radiation
The Journal of Chemical Physics / Jan 01, 1978
Bellum, J. C., & George, T. F. (1978). Quantum mechanical theory of collisional ionization in the presence of intense laser radiation. The Journal of Chemical Physics, 68(1), 134–144. https://doi.org/10.1063/1.435503
Reactive ion-assisted deposition of e-beam evaporated titanium for high refractive index TiO2 layers and laser damage resistant, broad bandwidth, high-reflection coatings
Applied Optics / Dec 23, 2013
Bellum, J., Field, E., Kletecka, D., & Long, F. (2013). Reactive ion-assisted deposition of e-beam evaporated titanium for high refractive index TiO2 layers and laser damage resistant, broad bandwidth, high-reflection coatings. Applied Optics, 53(4), A205. https://doi.org/10.1364/ao.53.00a205
Meeting thin film design and production challenges for laser damage resistant optical coatings at the Sandia Large Optics Coating Operation
SPIE Proceedings / Oct 07, 2009
Bellum, J., Kletecka, D., Rambo, P., Smith, I., Kimmel, M., Schwarz, J., Geissel, M., Copeland, G., Atherton, B., Smith, D., Smith, C., & Khripin, C. (2009). Meeting thin film design and production challenges for laser damage resistant optical coatings at the Sandia Large Optics Coating Operation. In G. J. Exarhos, V. E. Gruzdev, D. Ristau, M. J. Soileau, & C. J. Stolz (Eds.), Laser-Induced Damage in Optical Materials: 2009. SPIE. https://doi.org/10.1117/12.836597
Sandia's Z-Backlighter Laser Facility
SPIE Proceedings / Dec 06, 2016
Rambo, P., Schwarz, J., Schollmeier, M., Geissel, M., Smith, I., Kimmel, M., Speas, C., Shores, J., Armstrong, D., Bellum, J., Field, E., Kletecka, D., & Porter, J. (2016). Sandia’s Z-Backlighter Laser Facility. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), Laser-Induced Damage in Optical Materials 2016. SPIE. https://doi.org/10.1117/12.2245271
Comparisons of hafnia/silica anti-reflection coatings
Optical Interference Coatings / Jan 01, 2010
Bellum, J., Kletecka, D., Potter, J., Rambo, P., Smith, I., Schwarz, J., & Atherton, B. (2010). Comparisons of hafnia/silica anti-reflection coatings. Optical Interference Coatings. https://doi.org/10.1364/oic.2010.fa8
THEORY OF MOLECULAR RATE PROCESSES IN THE PRESENCE OF INTENSE LASER RADIATION
Chemical and Biochemical Applications of Lasers / Jan 01, 1979
George, T. F., Zimmerman, I. H., DeVries, P. L., Yuan, J.-M., Lam, K.-S., Bellum, J. C., Lee, H.-W., Slutsky, M. S., & Lin, J. (1979). THEORY OF MOLECULAR RATE PROCESSES IN THE PRESENCE OF INTENSE LASER RADIATION. In Chemical and Biochemical Applications of Lasers (pp. 253–354). Elsevier. https://doi.org/10.1016/b978-0-12-505404-1.50011-8
A coupled channels approach to Penning ionization of Ar BY He*(Is2s, 3S)
Chemical Physics / Feb 01, 1977
Bellum, J. C., & Micha, D. A. (1977). A coupled channels approach to Penning ionization of Ar BY He*(Is2s, 3S). Chemical Physics, 20(1), 121–127. https://doi.org/10.1016/0301-0104(77)85119-7
Impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories
Optical Engineering / Nov 06, 2014
Field, E., Bellum, J., & Kletecka, D. (2014). Impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories. Optical Engineering, 53(12), 122516. https://doi.org/10.1117/1.oe.53.12.122516
THEORY OF MOLECULAR RATE PROCESSES IN THE PRESENCE OF INTENSE LASER RADIATION
Chemical and Biochemical Applications of Lasers / Jan 01, 1979
George, T. F., Zimmerman, I. H., DeVries, P. L., Yuan, J.-M., Lam, K.-S., Bellum, J. C., Lee, H.-W., Slutsky, M. S., & Lin, J. (1979). THEORY OF MOLECULAR RATE PROCESSES IN THE PRESENCE OF INTENSE LASER RADIATION. In Chemical and Biochemical Applications of Lasers (pp. 253–354). Elsevier. https://doi.org/10.1016/b978-0-12-505404-1.50011-8
Coupling of discrete and continuum
electronic states in atom-atom collisions:
A coupled-channels investigation of
Penning ionization inHe * ( 1 s 2 s , S 3 )
Physical Review A / Oct 01, 1978
Bellum, J. C., & Micha, D. A. (1978). Coupling of discrete and continuum electronic states in atom-atom collisions: A coupled-channels investigation of Penning ionization in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mo>*</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mi>s</mml:mi><mml:mn>2</mml:mn><mml:mi>s</mml:mi><mml:mo>,</mml:mo><mml:mi> </mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>)</mml:mo></mml:math>+ Ar. Physical Review A, 18(4), 1435–1447. https://doi.org/10.1103/physreva.18.1435
Collisional ionization in the presence of intense laser radiation: Quantum-mechanical calculations for He* (3S)+Ar±h/ω→He+Ar+(2P)+e−
The Journal of Chemical Physics / Jun 01, 1979
Bellum, J. C., & George, T. F. (1979). Collisional ionization in the presence of intense laser radiation: Quantum-mechanical calculations for He* (3S)+Ar±h/ω→He+Ar+(2P)+e−. The Journal of Chemical Physics, 70(11), 5059–5071. https://doi.org/10.1063/1.437348
The treatment of correlation effects in second-order properties
International Journal of Quantum Chemistry / Jun 18, 2009
Bartlett, R. J., Bellum, J. C., & Brändas, E. J. (2009). The treatment of correlation effects in second-order properties. International Journal of Quantum Chemistry, 7(S7), 449–462. https://doi.org/10.1002/qua.560070753
Production of Optical Coatings Resistant to Damage by Petawatt Class Laser Pulses
Lasers - Applications in Science and Industry / Dec 09, 2011
Bellum, J., Rambo, P., Schwarz, J., Smith, I., Kimmel, M., Kletecka, D., & Atherto, B. (2011). Production of Optical Coatings Resistant to Damage by Petawatt Class Laser Pulses. In Lasers - Applications in Science and Industry. InTech. https://doi.org/10.5772/24285
Low Group Delay Dispersion Optical Coating for Broad Bandwidth High Reflection at 45° Incidence, P Polarization of Femtosecond Pulses with 900 nm Center Wavelength
Coatings / Mar 09, 2016
Bellum, J., Field, E., Winstone, T., & Kletecka, D. (2016). Low Group Delay Dispersion Optical Coating for Broad Bandwidth High Reflection at 45° Incidence, P Polarization of Femtosecond Pulses with 900 nm Center Wavelength. Coatings, 6(1), 11. https://doi.org/10.3390/coatings6010011
Reactive, Ion-Assisted Deposition of E-Beam Evaporated Ti for High Refractive Index TiO2 Layers and Laser Damage Resistant, Broad Bandwidth, High Reflection Coatings
Optical Interference Coatings / Jan 01, 2013
Bellum, J., Field, E., Kletecka, D., & Long, F. (2013). Reactive, Ion-Assisted Deposition of E-Beam Evaporated Ti for High Refractive Index TiO2 Layers and Laser Damage Resistant, Broad Bandwidth, High Reflection Coatings. Optical Interference Coatings. https://doi.org/10.1364/oic.2013.fa.7
Penning ionization of Ar by He* (1s2s, 3S) in the presence of intense laser radiation: Pronounced laser-modified collisional effects in the emitted-electron energy spectrum
The Journal of Chemical Physics / Aug 15, 1978
Bellum, J. C., Lam, K.-S., & George, T. F. (1978). Penning ionization of Ar by He* (1s2s, 3S) in the presence of intense laser radiation: Pronounced laser-modified collisional effects in the emitted-electron energy spectrum. The Journal of Chemical Physics, 69(4), 1781–1783. https://doi.org/10.1063/1.436714
Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm
Optical Engineering / Oct 12, 2016
Bellum, J. C., Field, E. S., Kletecka, D. E., Rambo, P. K., & Smith, I. C. (2016). Design and laser damage properties of a dichroic beam combiner coating for 22.5-deg incidence and S polarization with high transmission at 527 nm and high reflection at 1054 nm. Optical Engineering, 56(1), 011020. https://doi.org/10.1117/1.oe.56.1.011020
Repair of a mirror coating on a large optic for high laser damage applications using ion milling and over-coating methods
Optical Engineering / Jul 08, 2016
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2016). Repair of a mirror coating on a large optic for high laser damage applications using ion milling and over-coating methods. Optical Engineering, 56(1), 011002. https://doi.org/10.1117/1.oe.56.1.011002
Optical damage testing at the Z-Backlighter facility at Sandia National Laboratories
SPIE Proceedings / Oct 07, 2009
Kimmel, M., Rambo, P., Broyles, R., Geissel, M., Schwarz, J., Bellum, J., & Atherton, B. (2009). Optical damage testing at the Z-Backlighter facility at Sandia National Laboratories. In G. J. Exarhos, V. E. Gruzdev, D. Ristau, M. J. Soileau, & C. J. Stolz (Eds.), Laser-Induced Damage in Optical Materials: 2009. SPIE. https://doi.org/10.1117/12.836917
Analysis of laser damage tests on coatings designed for broad bandwidth high reflection of femtosecond pulses
Optical Engineering / Aug 25, 2016
Bellum, J., Winstone, T., Lamaignere, L., Sozet, M., Kimmel, M., Rambo, P., Field, E., & Kletecka, D. (2016). Analysis of laser damage tests on coatings designed for broad bandwidth high reflection of femtosecond pulses. Optical Engineering, 56(1), 011012. https://doi.org/10.1117/1.oe.56.1.011012
How reduced vacuum pumping capability in a coating chamber affects the laser damage resistance of HfO2/SiO2antireflection and high-reflection coatings
Optical Engineering / Jul 15, 2016
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2016). How reduced vacuum pumping capability in a coating chamber affects the laser damage resistance of HfO2/SiO2antireflection and high-reflection coatings. Optical Engineering, 56(1), 011005. https://doi.org/10.1117/1.oe.56.1.011005
Diatomic molecular-orbital correlation diagrams for Penning and associative ionization
Physical Review A / Feb 01, 1977
Bellum, J. C., & Micha, D. A. (1977). Diatomic molecular-orbital correlation diagrams for Penning and associative ionization. Physical Review A, 15(2), 635–646. https://doi.org/10.1103/physreva.15.635
Laser damage comparisons of broad-bandwidth, high-reflection optical coatings containing TiO2, Nb2O5, or Ta2O5high-index layers
Optical Engineering / Sep 21, 2016
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2016). Laser damage comparisons of broad-bandwidth, high-reflection optical coatings containing TiO2, Nb2O5, or Ta2O5high-index layers. Optical Engineering, 56(1), 011018. https://doi.org/10.1117/1.oe.56.1.011018
Experimental investigation of phase conjugation in stimulated Brillouin scattering of beams with mild cylindrical aberration
Optics Letters / Jan 01, 1988
Bellum, J. C., Crow, T. G., & Camp, E. L. (1988). Experimental investigation of phase conjugation in stimulated Brillouin scattering of beams with mild cylindrical aberration. Optics Letters, 13(1), 36. https://doi.org/10.1364/ol.13.000036
Tools for Improving Precision Optical Coatings through E-Beam Sweep Design
Optical Interference Coatings / Jan 01, 2007
Gevelber, M., Xu, B., & Reimann, G. (2007). Tools for Improving Precision Optical Coatings through E-Beam Sweep Design. Optical Interference Coatings. https://doi.org/10.1364/oic.2007.tucpdp1
Broad bandwidth high reflection coatings for petawatt class lasers: femtosecond pulse laser damage tests, and measurement of group delay dispersion
SPIE Proceedings / Feb 23, 2017
Bellum, J. C., Winstone, T. B., Field, E. S., & Kletecka, D. E. (2017). Broad bandwidth high reflection coatings for petawatt class lasers: femtosecond pulse laser damage tests, and measurement of group delay dispersion. In A. A. S. Awwal (Ed.), High Power Lasers for Fusion Research IV. SPIE. https://doi.org/10.1117/12.2267809
Laser damage, a new US standard: What is in it for me?
Components and Packaging for Laser Systems VI / Feb 21, 2020
Howland, D. J., Arenberg, J., Thomas, M. D., Turner, T., Bellum, J., Carr, C. W., Brophy, M., Krisiloff, A., Carlie, N., & Dabney, M. (2020). Laser damage, a new US standard: What is in it for me? In A. L. Glebov & P. O. Leisher (Eds.), Components and Packaging for Laser Systems VI. SPIE. https://doi.org/10.1117/12.2546571
The Effect of Coating System Base Pressure on the Laser Damage Threshold of HfO2/SiO2 High Reflection Coatings for 527 nm
Optical Interference Coatings 2016 / Jan 01, 2016
Field, E. S., Bellum, J., & Kletecka, D. (2016). The Effect of Coating System Base Pressure on the Laser Damage Threshold of HfO2/SiO2 High Reflection Coatings for 527 nm. Optical Interference Coatings 2016. https://doi.org/10.1364/oic.2016.wd.3
Quantum-mechanical theory for electronic-vibrational-rotational energy transfer in atom–diatom collisions: Analysis of the Hamiltonian
The Journal of Chemical Physics / Jul 15, 1983
Bellum, J. C., & McGuire, P. (1983). Quantum-mechanical theory for electronic-vibrational-rotational energy transfer in atom–diatom collisions: Analysis of the Hamiltonian. The Journal of Chemical Physics, 79(2), 765–776. https://doi.org/10.1063/1.445827
U.S. National Committee proposed revision to the ISO Laser Damage Standard
Laser-Induced Damage in Optical Materials 2017 / Nov 21, 2017
Howland, D. J., Arenberg, J. W., Thomas, M. D., Krisiloff, A., Turner, T., Field, E., Brophy, M., Shaffer, G., Bellum, J. C., & Carr, C. W. (2017). U.S. National Committee proposed revision to the ISO Laser Damage Standard. In G. J. Exarhos, D. Ristau, V. E. Gruzdev, J. A. Menapace, & M. Soileau (Eds.), Laser-Induced Damage in Optical Materials 2017. SPIE. https://doi.org/10.1117/12.2280559
Analysis of VUV and soft x‐ray lasing based on charge‐exchange mechanisms
AIP Conference Proceedings / Jan 01, 1982
Bellum, J. C., Chow, W. W., Drühl, K., & Scully, M. O. (1982). Analysis of VUV and soft x‐ray lasing based on charge‐exchange mechanisms. AIP Conference Proceedings. https://doi.org/10.1063/1.33759
Coatings for Petawatt-Class High-Energy Lasers
Optics and Photonics News / Jun 01, 2022
Bellum, J. (2022). Coatings for Petawatt-Class High-Energy Lasers. Optics and Photonics News, 33(6), 28. https://doi.org/10.1364/opn.33.6.000028
Experiments in support of the proposed US National Damage Standard
Laser-Induced Damage in Optical Materials 2021 / Oct 12, 2021
Arenberg, J., Thomas, M., Howland, D., & Bellum, J. (2021). Experiments in support of the proposed US National Damage Standard. In V. E. Gruzdev, C. W. Carr, D. Ristau, & C. S. Menoni (Eds.), Laser-Induced Damage in Optical Materials 2021. SPIE. https://doi.org/10.1117/12.2598814
Development of US national laser damage standard: 2020 status
Laser-induced Damage in Optical Materials 2020 / Sep 15, 2020
Arenberg, J. W., Howland, D., Thomas, M., Bellum, J. C., & Dabney, M. S. (2020). Development of US national laser damage standard: 2020 status. In V. E. Gruzdev, C. W. Carr, D. Ristau, & C. S. Menoni (Eds.), Laser-induced Damage in Optical Materials 2020. SPIE. https://doi.org/10.1117/12.2571877
U.S. National Committee proposed revision to the ISO Laser Damage Standard: 2019 progress report (Conference Presentation)
Laser-induced Damage in Optical Materials 2019 / Dec 03, 2019
Howland, D. J., Arenberg, J. W., Thomas, M. D., Turner, T., Bellum, J., Field, E. S., Carr, C. W., Shaffer, G., Brophy, M., & Krisiloff, A. (2019). U.S. National Committee proposed revision to the ISO Laser Damage Standard: 2019 progress report (Conference Presentation). In V. E. Gruzdev, C. W. Carr, D. Ristau, & C. S. Menoni (Eds.), Laser-induced Damage in Optical Materials 2019. SPIE. https://doi.org/10.1117/12.2536446
Acknowledgement to Reviewers of Coatings in 2016
Coatings / Jan 10, 2017
(2017). Acknowledgement to Reviewers of Coatings in 2016. Coatings, 7(1), 6. https://doi.org/10.3390/coatings7010006
Summary Report: NMSBA CY 2016 - AEgis Technologies Group Inc. #12458.
Dec 01, 2016
Bellum, J., & Field, E. (2016). Summary Report: NMSBA CY 2016 - AEgis Technologies Group Inc. #12458. Office of Scientific and Technical Information (OSTI). https://doi.org/10.2172/1335061
Photonics at TVI Community College – a critical rung in New Mexico’s photonics education ladder
Education and Training in Optics and Photonics / Jan 01, 2003
Bellum, J., Vasan, S., & Gellman, J. (2003). Photonics at TVI Community College – a critical rung in New Mexico’s photonics education ladder. Education and Training in Optics and Photonics. https://doi.org/10.1364/etop.2003.eme2
Study of Molecular Collision Dynamics for Chemical Laser Systems.
Mar 01, 1982
Bellum, J. C., & Burrows, M. (1982). Study of Molecular Collision Dynamics for Chemical Laser Systems. Defense Technical Information Center. https://doi.org/10.21236/ada117938
Laser-Enhanced Dynamics in Molecular Rate Processes
Radiation Energy Conversion in Space / Jan 01, 1978
Laser-Enhanced Dynamics in Molecular Rate Processes. (1978). In Radiation Energy Conversion in Space (pp. 583–592). American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/5.9781600865350.0583.0592
Effectiveness of ion cleaning to improve the laser damage threshold of HfO2/SiO2optical coatings for high reflection and antireflection at 527 nm and 1054 nm
SPIE Proceedings / Jul 22, 2016
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2016). Effectiveness of ion cleaning to improve the laser damage threshold of HfO2/SiO2optical coatings for high reflection and antireflection at 527 nm and 1054 nm. In T. Jitsuno, J. Shao, & W. Rudolph (Eds.), Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers. SPIE. https://doi.org/10.1117/12.2235689
Use of Al2O3 layers for higher laser damage threshold at 22.5° incidence, S polarization of a 527 nm/1054 nm dichroic coating
SPIE Proceedings / Dec 06, 2016
Bellum, J. C., Field, E. S., Kletecka, D. E., Rambo, P. K., & Smith, I. C. (2016). Use of Al2O3 layers for higher laser damage threshold at 22.5° incidence, S polarization of a 527 nm/1054 nm dichroic coating. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), Laser-Induced Damage in Optical Materials 2016. SPIE. https://doi.org/10.1117/12.2257607
Analysis of laser damage tests on a coating for broad bandwidth high reflection of femtosecond pulses
Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers / Jul 14, 2015
Bellum, J., Winstone, T., Lamaignere, L., Sozet, M., Kimmel, M., Rambo, P., Field, E., & Kletecka, D. (2015). Analysis of laser damage tests on a coating for broad bandwidth high reflection of femtosecond pulses. In J. Shao, T. Jitsuno, W. Rudolph, & M. Zhu (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.2186789
Comparative STEREO-LID (Spatio-TEmporally REsolved Optical Laser-Induced Damage) studies of critical defect distributions in IBS, ALD, and electron-beam coated dielectric films
Laser-Induced Damage in Optical Materials: 2015 / Nov 23, 2015
Xu, Y., Khabbazi, A., Day, T., Brown, A., Emmert, L. A., Talghader, J. J., Field, E., Kletecka, D., Bellum, J., Patel, D., Menoni, C. S., & Rudolph, W. (2015). Comparative STEREO-LID (Spatio-TEmporally REsolved Optical Laser-Induced Damage) studies of critical defect distributions in IBS, ALD, and electron-beam coated dielectric films. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.2196548
Design and laser damage properties of a dichroic beam combiner coating for 22.5° incidence and S polarization with high-transmission at 527nm and high-reflection at 1054nm
Laser-Induced Damage in Optical Materials: 2015 / Nov 23, 2015
Bellum, J. C., Field, E. S., Kletecka, D. E., Rambo, P. K., & Smith, I. C. (2015). Design and laser damage properties of a dichroic beam combiner coating for 22.5° incidence and S polarization with high-transmission at 527nm and high-reflection at 1054nm. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.2218166
How laser damage resistance of HfO2/SiO2optical coatings is affected by embedded contamination caused by pausing the deposition process
Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers / Jul 10, 2015
Field, E., Bellum, J., & Kletecka, D. (2015). How laser damage resistance of HfO2/SiO2optical coatings is affected by embedded contamination caused by pausing the deposition process. In J. Shao, T. Jitsuno, W. Rudolph, & M. Zhu (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.2185739
How reduced vacuum pumping capability in a coating chamber affects the laser damage resistance of HfO2/SiO2antireflection and high-reflection coatings
Laser-Induced Damage in Optical Materials: 2015 / Nov 23, 2015
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2015). How reduced vacuum pumping capability in a coating chamber affects the laser damage resistance of HfO2/SiO2antireflection and high-reflection coatings. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.2194131
Repair of a mirror coating on a large optic for high laser-damage applications using ion milling and over-coating methods
SPIE Proceedings / Oct 31, 2014
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2014). Repair of a mirror coating on a large optic for high laser-damage applications using ion milling and over-coating methods. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), Laser-Induced Damage in Optical Materials: 2014. SPIE. https://doi.org/10.1117/12.2067920
The impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories
SPIE Proceedings / Sep 22, 2014
Field, E., Bellum, J., & Kletecka, D. (2014). The impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories. In T. Jitsuno, J. Shao, & W. Rudolph (Eds.), Pacific Rim Laser Damage 2014: Optical Materials for High-Power Lasers. SPIE. https://doi.org/10.1117/12.2073448
Laser damage comparisons of broad-bandwidth, high-reflection optical coatings containing TiO2, Nb2O5, or Ta2O5high index layers
SPIE Proceedings / Nov 14, 2013
Field, E. S., Bellum, J. C., & Kletecka, D. E. (2013). Laser damage comparisons of broad-bandwidth, high-reflection optical coatings containing TiO2, Nb2O5, or Ta2O5high index layers. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. Soileau (Eds.), Laser-Induced Damage in Optical Materials: 2013. SPIE. https://doi.org/10.1117/12.2030068
Comparisons between laser damage and optical electric field behaviors for hafnia/silica antireflection coatings
Applied Optics / Feb 01, 2011
Bellum, J., Kletecka, D., Rambo, P., Smith, I., Schwarz, J., & Atherton, B. (2011). Comparisons between laser damage and optical electric field behaviors for hafnia/silica antireflection coatings. Applied Optics, 50(9), C340. https://doi.org/10.1364/ao.50.00c340
Z-Backlighter facility upgrades: a path to short/long pulse, multi-frame, multi-color x-ray backlighting at the Z-Accelerator
SPIE Proceedings / May 05, 2011
Schwarz, J., Rambo, P., Geissel, M., Kimmel, M., Schollmeier, M., Smith, I., Bellum, J., Kletecka, D., Sefkow, A., Smith, D., & Atherton, B. (2011). Z-Backlighter facility upgrades: a path to short/long pulse, multi-frame, multi-color x-ray backlighting at the Z-Accelerator. In J. Hein, L. O. Silva, G. Korn, L. A. Gizzi, & C. Edwards (Eds.), Diode-Pumped High Energy and High Power Lasers; ELI: Ultrarelativistic Laser-Matter Interactions and Petawatt Photonics; and HiPER: the European Pathway to Laser Energy. SPIE. https://doi.org/10.1117/12.887114
Dual wavelength laser damage testing for high energy lasers
SPIE Proceedings / Oct 13, 2010
Kimmel, M., Rambo, P., Schwarz, J., Bellum, J. C., & Atherton, B. (2010). Dual wavelength laser damage testing for high energy lasers. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. J. Soileau (Eds.), Laser-Induced Damage in Optical Materials: 2010. SPIE. https://doi.org/10.1117/12.867743
Laser damage by ns and sub-ps pulses on hafnia/silica anti-reflection coatings on fused silica double-sided polished using zirconia or ceria and washed with or without an alumina wash step
SPIE Proceedings / Oct 13, 2010
Bellum, J., Kletecka, D., Kimmel, M., Rambo, P., Smith, I., Schwarz, J., Atherton, B., Hobbs, Z., & Smith, D. (2010). Laser damage by ns and sub-ps pulses on hafnia/silica anti-reflection coatings on fused silica double-sided polished using zirconia or ceria and washed with or without an alumina wash step. In G. J. Exarhos, V. E. Gruzdev, J. A. Menapace, D. Ristau, & M. J. Soileau (Eds.), Laser-Induced Damage in Optical Materials: 2010. SPIE. https://doi.org/10.1117/12.868350
Nanosecond 1064nm damage thresholds for bare and anti-reflection coated silica surfaces
Laser-Induced Damage in Optical Materials: 2008 / Oct 08, 2008
Smith, A. V., Do, B. T., Bellum, J., Schuster, R., & Collier, D. (2008). Nanosecond 1064nm damage thresholds for bare and anti-reflection coated silica surfaces. In G. J. Exarhos, D. Ristau, M. J. Soileau, & C. J. Stolz (Eds.), SPIE Proceedings. SPIE. https://doi.org/10.1117/12.804130
Photonics at TVI Community College: a critical rung in New Mexico's photonics education ladder
SPIE Proceedings / Oct 09, 2003
Bellum, J., Vasan, S., & Gellman, J. (2003). Photonics at TVI Community College: a critical rung in New Mexico’s photonics education ladder. In B. L. Shoop & G. Swartzlander (Eds.), Eighth International Topical Meeting on Education and Training in Optics and Photonics. SPIE. https://doi.org/10.1117/12.2208377
A semiclassical approach to collisional ionization with application to the ArHe system
Chemical Physics / Sep 01, 1978
Lam, K.-S., Bellum, J. C., & George, T. F. (1978). A semiclassical approach to collisional ionization with application to the ArHe system. Chemical Physics, 33(2), 219–226. https://doi.org/10.1016/0301-0104(78)87131-6
A study of single-electron and total energies for some pairs of noble gas atoms
International Journal of Quantum Chemistry / Jun 18, 2009
Bellum, J. C., & Micha, D. A. (2009). A study of single-electron and total energies for some pairs of noble gas atoms. International Journal of Quantum Chemistry, 8(S8), 229–240. https://doi.org/10.1002/qua.560080827
The electronic spectra of conjugated free radicals
Molecular Physics / Sep 01, 1973
Jørgensen, P., & Bellum, J. (1973). The electronic spectra of conjugated free radicals. Molecular Physics, 26(3), 725–734. https://doi.org/10.1080/00268977300102041
Education
University of Florida
PhD, Department of Physics / August, 1976
Georgia Institute of Technology
BS, Department of Physics / June, 1968
Experience
Coherent Technologies
Consultant / February, 2017 — Present
I am a consultant specializing in laser damage resistant optical coatings for high energy lasers.
Sandia National Laboratories
Scientist and Engineer in Optical Engineering / September, 2012 — February, 2017
Lead optical engineer/scientist for Sandia's large optics coating facility responsible for the design and production of high laser-induced damage threshold optical coatings for the meter-size windows, mirrors, and lenses of Sandia's Z-Backlighter petawatt-class lasers.
Sandia National Laboratories
Optical Engineer and Scientist under contract to Sandia National Laboratories / April, 2004 — September, 2012
Lead optical engineer/scientist for Sandia's large optics coating facility responsible for the design and production of high laser-induced damage threshold optical coatings for the meter-size windows, mirrors, and lenses of Sandia's Z-Backlighter petawatt-class lasers.
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