Deep ultraviolet diamond Raman laser

Eduardo Granados; David J. Spence; Richard P. Mildren

doi:10.1364/OE.19.010857

Deep ultraviolet diamond Raman laser

Eduardo Granados^*, David J. Spence, Richard P. Mildren

^*Corresponding author for this work

MQ Photonics Research Centre

Research output: Contribution to journal › Article

68 Citations (Scopus)

Abstract

We present a synchronously pumped diamond Raman laser operating at 275.7 nm pumped by the 4th harmonic of a mode locked Nd:YVO4 laser. The laser had a threshold pump pulse energy of 5.8 nJ and generated up to 0.96 nJ pulses at 10.3% conversion efficiency. The results agree well with a numerical model that includes two-photon absorption of the pump and Stokes beams and uses a Raman gain coefficient of diamond of 100 cm/GW. We also report on the observation of nanometer scale two-photon assisted etching of the diamond crystal surfaces.

Original language	English
Pages (from-to)	10857-10863
Number of pages	7
Journal	Optics Express
Volume	19
Issue number	11
DOIs	https://doi.org/10.1364/OE.19.010857
Publication status	Published - 23 May 2011

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abstract = "We present a synchronously pumped diamond Raman laser operating at 275.7 nm pumped by the 4th harmonic of a mode locked Nd:YVO4 laser. The laser had a threshold pump pulse energy of 5.8 nJ and generated up to 0.96 nJ pulses at 10.3{\%} conversion efficiency. The results agree well with a numerical model that includes two-photon absorption of the pump and Stokes beams and uses a Raman gain coefficient of diamond of 100 cm/GW. We also report on the observation of nanometer scale two-photon assisted etching of the diamond crystal surfaces.",

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