Efficient all-solid-state passively Q-switched SWIR Tm:YAP/KGW Raman laser

Eytan Perez, Uzziel Sheintop, Rotem Nahear, Gilad Marcus, Salman Noach*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We present an all-passive efficient KGW Raman laser with an external-cavity configuration in the 2 µm spectral regime. The Raman laser was pumped by a passively Qswitched Tm:YAP laser emitting at 1935 nm. Due to the bi-axial properties of the KGW crystal, the laser exhibits stimulated Raman emission at two separate spectral lines: 2272 nm and 2343 nm. The output energies achieved at these two lines are 340 µJ/pulse and 450 µJ/pulse, accordingly. The seed to Raman laser conversion efficiencies achieved of 19.2% and 23.5%, respectively, are comparable to actively Q-switched laser arrangements. To the best of our knowledge, this is the first time an efficient Raman laser in the 2 µm regime is demonstrated in a completely passive configuration.

Original languageAmerican English
Pages (from-to)5409-5412
Number of pages4
JournalOptics Letters
Issue number19
StatePublished - 1 Oct 2020

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