Title :
Visualization of UV-induced photorefractive damage in LBO crystals
Author :
Puyu, P.V. ; Nikitin, D.G. ; Byalkovskiy, O.A. ; Vershinin, O.I. ; Tyrtysnyy, V.A.
Author_Institution :
IRE-Polus, NTO, Fryazino, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
UV-induced bulk degradation in LBO crystals was discovered. Long term generation of third or fourth harmonics of Yb pulsed fiber laser result in to bulk defects formation. Different approaches were used to visualize them and estimate their dimensions. The defects microstructure was observed by using the dark field method. Optical absorption in the crystals with defects was measured by using photothermal methods (PCI-3 device).
Keywords :
fibre lasers; lithium compounds; optical harmonic generation; photorefractive effect; photothermal effects; ultraviolet spectra; LBO crystals; LiB3O5; UV-induced bulk degradation; UV-induced photorefractive damage; Yb pulsed fiber laser; bulk defects formation; dark field method; fourth harmonic generation; microstructure; optical absorption; photothermal methods; third harmonic generation; Crystals; Integrated optics; Optical pumping; Pump lasers; Visualization; 266 nm; 355 nm; LBO; UV-induced defects; UV-lasers; bulk defects; forth harmonic generation; third harmonic generation;
Conference_Titel :
Laser Optics, 2014 International Conference
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4799-3884-1
DOI :
10.1109/LO.2014.6886485
