Open AccessStudy on passive Q switched Nd∶YVO—4 laser with GaAs asa passive Q switched component and output coupler
Author(s) -
Qiang Liu,
Mali Gong,
Ping Yan,
Jia Wei-Fu,
Ruizhen Cui,
Dongsheng Wang
Publication year - 2002
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.51.2756
Subject(s) - q switching , saturable absorption , laser , output coupler , pulse duration , pulse (music) , optics , pulse width modulation , materials science , power (physics) , diode , laser diode , optoelectronics , physics , fiber laser , quantum mechanics , detector
Passive Q switched operation of a laser diodepumped laser is studied with a saturable absorber GaAs as a passive Q switched component and F-P output coupler. The Q switched pulse duration is 47ns, pulse repetition rate is 1183 kHz, pulse average power is 430mW, beam quality M 2 is equal to 1 13 and the laser threshold of passive Q switching is 1700mW. We performed numerical calculations of coupled wave equations for the case of GaAs playing the role as mentioned above, discussed the passive Q switched mechanism and the dependence of pulse duration, pulse repetition rate and average power on the pumping rate and laser cavity length, which was in good agreement with the experimental results. A brief and effective technique is provided for compact Q switched solidstate laser having multiple functions.