All Stories

  1. Repair of a mirror coating on a large optic for high laser damage applications using ion milling and over-coating methods

    Article • Optical Engineering, July 2016, SPIE

    Dr. John C Bellum

  2. The Effect of Coating System Base Pressure on the Laser Damage Threshold of HfO2/SiO2 High Reflection Coatings for 527 nm

    Article • January 2016, Optical Society of America (OSA)

    Dr. John C Bellum

  3. How reduced vacuum pumping capability in a coating chamber affects the laser damage resistance of HfO 2 /SiO 2 antireflection and high-reflection coatings

    Article • November 2015, SPIE

    Dr. John C Bellum

  4. Comparative STEREO-LID (Spatio-TEmporally REsolved Optical Laser-Induced Damage) studies of critical defect distributions in IBS, ALD, and electron-beam coated dielectric films

    Article • November 2015, SPIE

    Dr. John C Bellum

  5. 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

    Article • November 2015, SPIE

    Dr. John C Bellum

  6. Analysis of laser damage tests on a coating for broad bandwidth high reflection of femtosecond pulses

    Article • July 2015, SPIE

    Dr. John C Bellum

  7. How laser damage resistance of HfO 2 /SiO 2 optical coatings is affected by embedded contamination caused by pausing the deposition process

    Article • July 2015, SPIE

    Dr. John C Bellum

  8. Impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories

    Article • Optical Engineering, November 2014, SPIE

    Dr. John C Bellum

  9. Repair of a mirror coating on a large optic for high laser-damage applications using ion milling and over-coating methods

    Article • October 2014, SPIE

    Dr. John C Bellum

  10. The impact of different cleaning processes on the laser damage threshold of antireflection coatings for Z-Backlighter optics at Sandia National Laboratories

    Article • September 2014, SPIE

    Dr. John C Bellum

  11. Reactive ion-assisted deposition of e-beam evaporated titanium for high refractive index TiO_2 layers and laser damage resistant, broad bandwidth, high-reflection coatings

    Article • Applied Optics, December 2013, Optical Society of America (OSA)

    Dr. John C Bellum

  12. Laser damage comparisons of broad-bandwidth, high-reflection optical coatings containing TiO 2 , Nb 2 O 5 , or Ta 2 O 5 high index layers

    Article • November 2013, SPIE

    Dr. John C Bellum

  13. Reactive, Ion-Assisted Deposition of E-Beam Evaporated Ti for High Refractive Index TiO2 Layers and Laser Damage Resistant, Broad Bandwidth, High Reflection Coatings

    Article • January 2013, Optical Society of America (OSA)

    Dr. John C Bellum

  14. Production of Optical Coatings Resistant to Damage by Petawatt Class Laser Pulses

    Article • December 2011, IntechOpen

    Dr. John C Bellum

  15. Z-Backlighter facility upgrades: a path to short/long pulse, multi-frame, multi-color x-ray backlighting at the Z-Accelerator

    Article • May 2011, SPIE

    Dr. John C Bellum

  16. Comparisons between laser damage and optical electric field behaviors for hafnia/silica antireflection coatings

    Article • Applied Optics, February 2011, Optical Society of America (OSA)

    Dr. John C Bellum

  17. Dual wavelength laser damage testing for high energy lasers

    Article • October 2010, SPIE

    Dr. John C Bellum

  18. 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

    Article • October 2010, SPIE

    Dr. John C Bellum

  19. Optical damage testing at the Z-Backlighter facility at Sandia National Laboratories

    Article • October 2009, SPIE

    Dr. John C Bellum

  20. Meeting thin film design and production challenges for laser damage resistant optical coatings at the Sandia Large Optics Coating Operation

    Article • October 2009, SPIE

    Dr. John C Bellum

  21. Nanosecond 1064nm damage thresholds for bare and anti-reflection coated silica surfaces

    Article • October 2008, SPIE

    Dr. John C Bellum

  22. Photonics at TVI Community College: a critical rung in New Mexico's photonics education ladder

    Article • October 2003, SPIE

    Dr. John C Bellum

  23. Experimental investigation of phase conjugation in stimulated Brillouin scattering of beams with mild cylindrical aberration

    Article • Optics Letters, January 1988, Optical Society of America (OSA)

    Dr. John C Bellum

  24. Quantum‐mechanical theory for electronic‐vibrational‐rotational energy transfer in atom–diatom collisions: Analysis of the Hamiltonian

    Article • The Journal of Chemical Physics, July 1983, American Institute of Physics

    Dr. John C Bellum

  25. Analysis of VUV and soft x‐ray lasing based on charge‐exchange mechanisms

    Article • January 1982, American Institute of Physics

    Dr. John C Bellum

  26. Electronic‐to‐vibrational energy transfer in collisions of excited sodium with molecular hydrogen

    Article • The Journal of Chemical Physics, August 1979, American Institute of Physics

    Dr. John C Bellum

  27. Collisional ionization in the presence of intense laser radiation: Quantum‐mechanical calculations for He* (3S)+Ar±h/ω→He+Ar+(2P)+e−

    Article • The Journal of Chemical Physics, June 1979, American Institute of Physics

    Dr. John C Bellum

  28. THEORY OF MOLECULAR RATE PROCESSES IN THE PRESENCE OF INTENSE LASER RADIATION

    Article • January 1979, Elsevier

    Dr. John C Bellum

  29. Coupling of discrete and continuum electronic states in atom-atom collisions: A coupled-channels investigation of Penning ionization in He * ( 1 s 2 s ,   S 3 ) + Ar

    Article • October 1978, American Physical Society (APS)

    Dr. John C Bellum

  30. A semiclassical approach to collisional ionization with application to the ArHe system

    Article • Chemical Physics, September 1978, Elsevier

    Dr. John C Bellum

  31. 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

    Article • The Journal of Chemical Physics, August 1978, American Institute of Physics

    Dr. John C Bellum

  32. Quantum mechanical theory of collisional ionization in the presence of intense laser radiation

    Article • The Journal of Chemical Physics, January 1978, American Institute of Physics

    Dr. John C Bellum

  33. Diatomic molecular-orbital correlation diagrams for Penning and associative ionization

    Article • February 1977, American Physical Society (APS)

    Dr. John C Bellum

  34. A coupled channels approach to Penning ionization of Ar BY He*(Is2s, 3S)

    Article • Chemical Physics, February 1977, Elsevier

    Dr. John C Bellum

  35. The electronic spectra of conjugated free radicals

    Article • Molecular Physics, September 1973, Taylor & Francis

    Dr. John C Bellum