Pulse shortening in the passive Q-switched all-solid-state two-color lasers with intracavity stimulated Raman scattering

摘要

The diode-pumped Q-switched solid-state lasers allowing nano- and sub-nanosecond pulsing are of interest due to their low cost and high peak output powers. Their applications range from spectroscopy and environment sensing to medicine. Yb{sub}(3+)-doped active crystals excel the variety of the Q-switched laser media operating about 1 um in smaller quantum defect, large gain relaxation time and wider tuning region. The prominent example is Yb{sub}(3+):KGd(WO{sub}4){sub}2 [1], which is known as a Raman active medium. As a result, the simultaneous two-color generation at 1033 and 1139 nm is possible without a need of any additional frequency conversion.