Investigation of a highly compact intracavity actively Q-switched cascade diamond Raman laser

Haolin Yang, Yue Chen, Kaili Ding, Fuqiang Jia, Kang Li, Nigel Copner, Antony Davies

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Abstract

A laser diode (LD) pumped intracavity chemical vapor deposition (CVD) diamond cascade Raman laser is reported here. By rotating a Brewster plate (BP) in the laser resonator, the Raman laser with tunable output coupling rate is achieved. The highly compact diamond laser emitted 1240 nm and 1485 nm Stokes light simultaneously via optimization of the pumping direction. The slope efficiency of the intracavity diamond laser is improved by optimizing the output coupling rate and adjusting the repetition rate of the 1064 nm fundamental laser. Ultimately, the maximum slope efficiency of the first Stokes light (1240 nm) is 16.8%, and the corresponding output power is about 0.6 W. The maximum peak power is 2.5 kW when the power of 808 nm LD is 34.7 W.
Original languageEnglish
Pages (from-to)9715-9721
Number of pages7
JournalApplied Optics
Volume59
Issue number31
DOIs
Publication statusPublished - 1 Nov 2020

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