Journal
LASER & OPTOELECTRONICS PROGRESS
Volume 55, Issue 12, Pages -Publisher
SHANGHAI INST OPTICS & FINE MECHANICS, CHINESE ACAD SCIENCE
DOI: 10.3788/LOP55.121404
Keywords
lasers; 1319 nm; Co:MgAl2O4 crystal; passively Q-switching
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A Co : MgAl2O4 crystal with an initial transmissivity of 89. 5% is used as a saturable absorber at a wavelength of 1.3 mu m. A low-threshold and high-efficiency passively Q-switched 1319 nm Nd: YAG laser output is achieved with two-mirror resonator. When the pump power is 10.0 W, a pulsed laser with an average output power of 490 mW, the narrowest pulse width of 18.3 ns, a repetition rate of 17.5 kHz, a pulse energy of 28.1 mu J and a peak power of 1533 W is obtained. The results show that the Co : MgAl2O4 crytal possesses a good saturable absorption property at a wavelength of 1.3 mu m.
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