100 kW peak power external cavity diamond Raman laser at 2.52 μm

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Demetriou, Giorgos and Kemp, Alan J. and Savitski, Vasili (2019) 100 kW peak power external cavity diamond Raman laser at 2.52 μm. Optics Express, 27 (7). pp. 10296-10303. ISSN 1094-4087 (https://doi.org/10.1364/OE.27.010296)

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Abstract

We report an external cavity diamond Raman laser operating at 2.52 μm, pumped by a 1.89 μm Tm:LiYF4 (YLF) laser. The maximum pulse energy at 2.52 μm is 1.67 mJ for 4.4 mJ of pump, yielding a conversion efficiency of 38 %. The best slope efficiency is ~60% and the Raman pulse duration is between 11 and 15 ns for ~33 ns pump pulse duration. The peak power at 2.52 μm is >100 kW. This demonstration of a Thulium laser pumped diamond Raman laser paves the way for accessing the industrially important wavelength region of ~2.5 μm.

ORCID iDs

Demetriou, Giorgos ORCID logoORCID: https://orcid.org/0000-0003-0608-4113, Kemp, Alan J. ORCID logoORCID: https://orcid.org/0000-0002-1076-3138 and Savitski, Vasili ORCID logoORCID: https://orcid.org/0000-0001-5261-1186;
CORE (COnnecting REpositories)