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Single frequency thulium fibre distributed Bragg reflector laser
Author(s): S. W. S. Ng; M. R. Oermann; P. J. Veitch; J. Munch; A. Hemming
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Paper Abstract

Gravitational wave detectors rely on the interference of light at the asymmetric port of a Michelson interferometer. The required light sources for these detectors are high power (200 W) with low intensity and frequency noise [1]. These requirements are currently met with the amplification of a monolithic single-frequency Nd:YAG non-planar-ringoscillator (NPRO) [2]. To improve the sensitivity of next generation detectors, cryogenic silicon test masses have been proposed to reduce the thermal coating noise. Laser sources near 2000 nm appear promising as they lie in the silicon transmission window and have reduced absorption in the amorphous silica coatings which reduces the heat-load on the cryogenically cooled mirrors [3]. High power thulium-doped fibre amplifiers provide broad emission in this wavelength range and have previously been demonstrated with high power and narrow linewidths [4]. Suitable thulium NPRO sources are not commercially available and an alternative seed source is required to determine the noise characteristics of these amplifiers.

Paper Details

Date Published: 30 December 2019
PDF: 2 pages
Proc. SPIE 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019, 1120018 (30 December 2019); doi: 10.1117/12.2540065
Show Author Affiliations
S. W. S. Ng, ARC Ctr. of Excellence for Gravitational Wave Discovery (Australia)
The Univ. of Adelaide (Australia)
M. R. Oermann, Defence Science and Technology Group (Australia)
P. J. Veitch, ARC Ctr. of Excellence for Gravitational Wave Discovery (Australia)
The Univ. of Adelaide (Australia)
J. Munch, ARC Ctr. of Excellence for Gravitational Wave Discovery (Australia)
The Univ. of Adelaide (Australia)
A. Hemming, The Univ. of Adelaide (Australia)


Published in SPIE Proceedings Vol. 11200:
AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019
Arnan Mitchell; Halina Rubinsztein-Dunlop, Editor(s)

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