I have a new publication on random lasers in Optics Express.
Yan Feng, Shenghong Huang, Guanshi Qin, Mitsuru Musha, and Ken-ichi Ueda, University of Electro-Communications
A microchip-type laser with multiple scattering from powder as necessary feedback is demonstrated. The laser consists of a transparent ceramic Nd:YAG microchip and a Nd:YAG powder tablet, operates at quasi-continuous- wave regime pumped by a laser diode array.
Japanese Journal of Applied Physics
Vol. 43, No. 10B, 2004, pp.L1379-L1381
Single Frequency Ytterbium Fiber Laser From Linear Cavity with Loop Mirror Filter
Shenghong Huang*, Yan Feng, Guanshi Qin, Akira Shirakawa, Mitsuru Musha and Ken-ichi Ueda
Single frequency ytterbium fiber laser was demonstrated by combining polariztion controller and loop mirror filter in linear laser cavity. Spatial hole burning effect was eliminated by adjusting polarization controller appropriately. The loop mirror with unpumped ytterbium fiber as a narrow bandpass filter can discriminate laser longitudinal modes efficiently. Output power up to 11.7 mW at 1064 nm were obtained for lauched pump power of 68 mW at 976 nm, the slope efficiency is about 22%.