Single frequency thulium fibre distributed Bragg reflector laser

S. W. S. Ng; M. R. Oermann; P. J. Veitch; J. Munch; A. Hemming

doi:10.1117/12.2540065

30 December 2019 Single frequency thulium fibre distributed Bragg reflector laser

S. W. S. Ng, M. R. Oermann, P. J. Veitch, J. Munch, A. Hemming

Proceedings Volume 11200, AOS Australian Conference on Optical Fibre Technology (ACOFT) and Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS) 2019; 1120018 (2019) https://doi.org/10.1117/12.2540065
Event: ANZCOP, 2019, Melbourne, Australia

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.

Citation Download Citation

S. W. S. Ng, M. R. Oermann, P. J. Veitch, J. Munch, and A. Hemming "Single frequency thulium fibre distributed Bragg reflector laser", 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); https://doi.org/10.1117/12.2540065

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