A very broad stimulated emission of light covering almost the entire visible spectrum is provided by a fused silica fiber Raman laser. The fiber is 3.5–50 m long with a 50-µm diameter, and the exciting light at 5320 Å has a power of about 60 kW.
© 1978 Optical Society of America
J. Botineau, F. Gires, A. Saïssy, C. Vanneste, and A. Azema, "Laser Raman à fibre émettant dans un très large domaine spectral," Appl. Opt. 17, 1208-1209 (1978)