Single-frequency 620 nm diamond laser at high power, stabilized via harmonic self-suppression and spatial-hole-burning-free gain | Zendy

Xuezong Yang | Zendy; Ondřej Kitzler | Zendy; David J. Spence | Zendy; Robert J. Williams | Zendy; Zhenxu Bai | Zendy; Soumya Sarang | Zendy; Lei Zhang | Zendy; Yan Feng | Zendy; Richard P. Mildren | Zendy

Open Access

Single-frequency 620 nm diamond laser at high power, stabilized via harmonic self-suppression and spatial-hole-burning-free gain

Author(s) -

Xuezong Yang,

Ondřej Kitzler,

David J. Spence,

Robert J. Williams,

Zhenxu Bai,

Soumya Sarang,

Lei Zhang,

Yan Feng,

Richard P. Mildren

Publication year - 2019

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.44.000839

Subject(s) - laser linewidth , optics , materials science , laser , longitudinal mode , multi mode optical fiber , diamond , raman spectroscopy , second harmonic generation , laser power scaling , optoelectronics , physics , optical fiber , composite material

Single longitudinal mode (SLM) operation of a 620 nm diamond Raman laser is demonstrated in a standing-wave cavity that includes a second-harmonic generation element. Mode competition provided by the harmonic mixing is shown to greatly increase mode stability, in addition to the benefits of the spatial-hole-burning-free gain medium. Using a multi-longitudinal mode 1064 nm Nd:YAG pump laser of power 321 W and linewidth 3.3 GHz, SLM powers of 38 W at 620 nm and 11.8 W at 1240 nm were obtained. The results indicate that simple standing-wave oscillators pumped by multimode Yb or Nd pumps compose a promising practical route towards the generation of high-power SLM beams in the yellow-red part of the spectrum.

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