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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 19 — Sep. 10, 2012
  • pp: 21372–21378

High-Q UV whispering gallery mode resonators made of angle-cut BBO crystals

Guoping Lin, Josef Fürst, Dmitry V. Strekalov, Ivan S. Grudinin, and Nan Yu  »View Author Affiliations

Optics Express, Vol. 20, Issue 19, pp. 21372-21378 (2012)

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We report an investigation on angle-cut beta barium borate (BBO) whispering gallery mode (WGM) resonators operating in the ultra violet (UV) wavelength range. A quality (Q) factor of 1.5 × 108 has been demonstrated at 370 nm. New upper bounds for the absorption coefficients of BBO are obtained from the Q factor measurements. Moreover, polarization rotations of WGMs in the angle-cut birefringent resonators are observed and investigated. To the best of our knowledge, this is not only the first reported demonstration of an angle-cut WGM resonator but also the first reported high Q WGM resonator in the UV region.

© 2012 OSA

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(260.1440) Physical optics : Birefringence
(260.7190) Physical optics : Ultraviolet

ToC Category:
Optical Devices

Original Manuscript: July 13, 2012
Revised Manuscript: August 11, 2012
Manuscript Accepted: August 19, 2012
Published: September 4, 2012

Guoping Lin, Josef Fürst, Dmitry V. Strekalov, Ivan S. Grudinin, and Nan Yu, "High-Q UV whispering gallery mode resonators made of angle-cut BBO crystals," Opt. Express 20, 21372-21378 (2012)

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