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Optics Letters

Optics Letters


  • Vol. 21, Iss. 7 — Apr. 1, 1996
  • pp: 453–455

Ultimate Q of optical microsphere resonators

M. L. Gorodetsky, A. A. Savchenkov, and V. S. Ilchenko  »View Author Affiliations

Optics Letters, Vol. 21, Issue 7, pp. 453-455 (1996)

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We demonstrate the quality factor Q = (0.8 ± 0.1) × 1010 of whispering-gallery modes in fused-silica microspheres at 633 nm, close to the ultimate level determined by fundamental material attenuation as measured in optical fibers. The lifetime of ultimate Q is limited by adsorption of atmospheric water. Monitoring of adsorption kinetics with submonolayer sensitivity by Q factors and frequencies of whispering-gallery modes is demonstrated. The possibility of supermaterial Q’s owing to intrinsic suppression of scattering losses in micropheres is discussed.

© 1996 Optical Society of America

Original Manuscript: November 15, 1995
Published: April 1, 1996

M. L. Gorodetsky, A. A. Savchenkov, and V. S. Ilchenko, "Ultimate Q of optical microsphere resonators," Opt. Lett. 21, 453-455 (1996)

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