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Proceedings Paper

Bottle micro-resonator temperature sensors for laser coolers
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Paper Abstract

We show theoretically that a bottle resonator with a nanoscale altitude made on the surface of an optical fiber can be used as a temperature sensor for laser cooling of solids. The operation of such sensors is based on whispering gallery modes (WGMs). Bottle resonators can be made at different positions along the length of the fiber, which undergoes laser cooling. A smooth perturbation with a small nanoscale altitude on the surface of the fiber does not couple fiber modes propagating along the fiber axis and does not influence the laser cooling process. The temperature of the sample at each of these positions can be monitored as a shift in the dips seen in the transmission spectrum of a biconically tapered fiber placed perpendicular to the fiber axis on the top of the resonator to excite WGMs. Temperature sensitivities ~12pm/K and ~16pm/K are obtained for Yb3+:ZBLAN and Yb3+:YAG samples, respectively. The possibility of using bottle resonators for other applications is also discussed.

Paper Details

Date Published: 7 March 2016
PDF: 7 pages
Proc. SPIE 9765, Optical and Electronic Cooling of Solids, 97650M (7 March 2016); doi: 10.1117/12.2212811
Show Author Affiliations
Galina Nemova, Ecole Polytechnique de Montréal (Canada)
Raman Kashyap, Ecole Polytechnique de Montréal (Canada)

Published in SPIE Proceedings Vol. 9765:
Optical and Electronic Cooling of Solids
Richard I. Epstein; Denis V. Seletskiy; Mansoor Sheik-Bahae, Editor(s)

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