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Title: Black YAG crystal and BDN dye as passive Q-switched laser modulators
Authors: Sanghi, S
Dodain, N
Agarwal, A
Keywords: Saturable absorbers;Q-switching;Q-switched laser modulators;Bleaching effects;Laser modulators
Issue Date: Feb-2004
Publisher: NISCAIR-CSIR, India
IPC Code: H01S 5/00
Abstract: Passive Q-switching has been done in Nd:YAG laser transmitter using Black YAG crystal and BDN dye as saturable absorbers. The results have been obtained for two different cases (i) at free running laser threshold and (ii) Q-switched laser action for these absorbers. It has been found that the output peak power in Q-switched laser operation mode is much large for both the absorbers than in free running regime. Further, the results of Q-switched output power obtained with these absorbers have been compared and it has been found that pulse width in case of Black YAG crystal is larger in comparison to that obtained with BDN dye, thereby providing a better way of overcoming spiking phenomenon generally occurring in solid state lasers.
Page(s): 89-92
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.42(02) [February 2004]

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