Title :
Control of gray-tracking formation for KTP and LBO crystals
Author :
Motokoshi, S. ; Jitsuno, T. ; Izawa, Y. ; Nakatsuka, M.
Author_Institution :
Inst. for Laser Technol., Osaka, Japan
Abstract :
Gray-tracking formations for KTP crystals were controlled by thermal annealing process before laser irradiation because hydroxyls in the crystals were controllable. The formation was suppressed with increasing the annealing temperature and humidity. LBO crystals were also examined.
Keywords :
absorption coefficients; annealing; colour centres; impurities; laser beam effects; lithium compounds; optical harmonic generation; optical materials; photochromism; potassium compounds; KTP; KTiOPO4; LiB/sub 3/O/sub 5/; SHG; THG; absorption coefficients; annealing temperature; color center; controllable hydroxyls; darkening; gray-tracking formation control; irradiation time; laser irradiation; nonlinear crystal; thermal annealing; transmittance; Absorption; Annealing; Atmosphere; Crystals; Humidity; Impurities; Laser beam cutting; Nonlinear optics; Solid lasers; Temperature;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.971044
