Wavelength diversification of high-power external cavity diamond Raman lasers using intracavity harmonic generation | Zendy

Hadiya Jasbeer | Zendy; Robert J. Williams | Zendy; Ondřej Kitzler | Zendy; Aaron McKay | Zendy; Richard P. Mildren | Zendy

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Wavelength diversification of high-power external cavity diamond Raman lasers using intracavity harmonic generation

Author(s) -

Hadiya Jasbeer,

Robert J. Williams,

Ondřej Kitzler,

Aaron McKay,

Richard P. Mildren

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.001930

Subject(s) - materials science , optics , lithium triborate , laser , energy conversion efficiency , optoelectronics , raman laser , laser beam quality , second harmonic generation , diamond , raman spectroscopy , continuous wave , raman scattering , laser beams , physics , composite material

We report a high power quasi-continuous-wave (QCW) 620 nm laser from an external cavity diamond Raman laser utilizing intracavity frequency doubling in lithium triborate. Output power of 30 W for durations of 0.25 ms at 15% conversion efficiency was achieved with a beam quality factor M 2 = 1.1 from a free-running Nd:YAG pump laser of M 2 = 1.5. The critical design parameters that affect conversion efficiency and power were analysed with the aid of an analytical model. By adaptation to other pump technologies, the diamond approach provides a novel pathway towards high brightness CW beam generation in the visible and ultraviolet regions.

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