Photothermal-lensing measurements of two-photon absorption and two-photon-induced color centers in borosilicate glasses at 532 nm

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · J. Opt. Soc. Am. B: Opt. Phys.; (United States)

DOI:https://doi.org/10.1364/JOSAB.2.001402· OSTI ID:5321189

White, III, W T; Henesian, M A; Weber, M J

Using photothermal lensing, we have measured two-photon absorption coefficients and have observed laser-induced solarization at 532 nm in the transparent borosilicate glasses BK-3, BK-7, and BK-10. The two-photon absorption coefficients at 532 nm are 0.6, 2.9, and 0.4 cm/TW for BK-3, BK-7, and BK-10, respectively. This is approximately 2 orders of magnitude smaller than the two-photon absorption coefficients of crystalline materials of comparable energy-band gap. Our results in BK-7 indicate that a two-photon process initiates the solarization and that one-photon bleaching limits it. The maximum induced absorption at 532 nm in BK-7 is approximately 0.07 cm/sup -1/ per GW/cm/sup 2/.

• Research Organization: Lawrence Livermore Laboratory, University of California, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5321189
• Journal Information: J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 2:9; ISSN JOBPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
42 ENGINEERING
420300 -- Engineering-- Lasers-- (-1989)
ABSORPTIVITY
BOROSILICATE GLASS
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
GLASS
LASER RADIATION
LASERS
MULTI-PHOTON PROCESSES
NEODYMIUM LASERS
NONLINEAR OPTICS
OPTICAL PROPERTIES
OPTICS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
PULSES
RADIATION EFFECTS
RADIATIONS
SOLID STATE LASERS
VACANCIES