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Opt Express. 2007 May 28;15(11):6768-73.

Optical resonators with ten million finesse.

Abstract

We report a significant improvement of the finesse and quality factor of a calcium fluoride whispering gallery mode optical resonator achieved with iterative thermal annealing. The initial and final values of the resonator finesse are F(i) approximately 5 x 10(5) and F(f) >/= 10(7) respectively. The measurements are conducted at room temperature in the laboratory atmosphere.

PMID:
19546987
DOI:
10.1364/oe.15.006768

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