Bt. Hansson et At. Friberg, Eye-safe actively Q-switched microchip laser with an electro-absorbing semiconductor modulator, OPTICS LETT, 26(14), 2001, pp. 1057-1059
We present what we believe to be the first actively Q-switched monolithic m
icrochip laser with a wavelength of 1.55 mum that uses an electro-absorbing
semiconductor modulator. At an absorbed pump power of 130 mW and a switchi
ng voltage of 2.2 V, the laser produces 470-nJ pulses at a repetition rate
of 10 kHz. The output is a stable single longitudinal mode with a center wa
velength of 1.553 mu tm, and the transverse beam profile is close to an ide
al Gaussian, with an M-2 value of 1.15. (C) 2001 Optical Society of America
.