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Proceedings Paper

Mid-infrared whispering gallery resonators based on non-oxide nonlinear optical crystals
Author(s): Yuechen Jia; Kevin Hanka; Ingo Breunig; Kevin T. Zawilski; Peter G. Schunemann; Karsten Buse
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Paper Abstract

High-quality whispering gallery resonators (WGRs) made of AgGaSe2 and CdSiP2 bulk crystals are fabricated. With femtosecond laser matching and subsequent fine polishing, the intrinsic Q-factors of these resonators are approaching values of 106 to 107 . By adjusting the coupling condition, maximum coupling efficiencies of 60% and 30% for AgGaSe2 and CdSiP2 resonators could be obtained. In addition, thermal effects on the distortion of the mode spectra of these resonators are also investigated. The results in this work reveal great potentials of WGRs made of non-oxide crystals for mid infrared applications.

Paper Details

Date Published: 16 February 2018
PDF: 6 pages
Proc. SPIE 10518, Laser Resonators, Microresonators, and Beam Control XX, 105180X (16 February 2018); doi: 10.1117/12.2288910
Show Author Affiliations
Yuechen Jia, Univ. of Freiburg (Germany)
Kevin Hanka, Univ. of Freiburg (Germany)
Ingo Breunig, Univ. of Freiburg (Germany)
Fraunhofer-Institut für Physikalische Messtechnik (Germany)
Kevin T. Zawilski, BAE Systems (United States)
Peter G. Schunemann, BAE Systems (United States)
Karsten Buse, Univ. of Freiburg (Germany)
Fraunhofer-Institut für Physikalische Messtechnik (Germany)


Published in SPIE Proceedings Vol. 10518:
Laser Resonators, Microresonators, and Beam Control XX
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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