BEHAVIOR OF NONLINEAR LIQUID-CRYSTAL MIRR ORS, MADE OF A NONABSORBINGCHOLESTERIC, IN THE CAVITY OF AN YAG-ND LASER OPERATING IN THE CW REGIME AND AT A HIGH PULSE REPETITION FREQUENCY

Authors
LUKISHOVA SG BELYAEV SV LEBEDEV KS MAGULARIYA EA SCHMID AV MALIMONENKO NV
Citation
Sg. Lukishova et al., BEHAVIOR OF NONLINEAR LIQUID-CRYSTAL MIRR ORS, MADE OF A NONABSORBINGCHOLESTERIC, IN THE CAVITY OF AN YAG-ND LASER OPERATING IN THE CW REGIME AND AT A HIGH PULSE REPETITION FREQUENCY, Kvantovaa elektronika, 23(9), 1996, pp. 817-819
Citations number
10
Categorie Soggetti
Physics, Applied","Engineering, Eletrical & Electronic
Journal title
Kvantovaa elektronika → ACNP
ISSN journal
03687147
Volume
23
Issue
9
Year of publication
1996
Pages
817 - 819
Database
ISI
SICI code
0368-7147(1996)23:9<817:BONLMO>2.0.ZU;2-1
Abstract
Nonlinear bleaching of output mirrors, made of a nonabsorbing choleste ric, in an YAG:Nd laser was investigated. In the cw regime there was n o difference between the output powers of lasers with dielectric and c holesteric mirrors. In the pulse-periodic regime (pulse duration 500 m s, repetition frequency 4.5 kHz) the lasing disappeared after 0.5-5.0 min because of a strong reduction in the reflection coefficient of the output mirror bleached by laser pulses. The observed effect was indep endent of the average power density and this made it possible to attri bute it to an increase in the pitch of the cholesteric helix in the op tical wave field.