Locking a microsphere whispering-gallery mode to a laser | Zendy

Jeromy P. Rezac | Zendy; A. T. Rosenberger | Zendy

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Locking a microsphere whispering-gallery mode to a laser

Author(s) -

Jeromy P. Rezac,

A. T. Rosenberger

Publication year - 2001

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.8.000605

Subject(s) - whispering gallery wave , materials science , optics , tuner , laser , fiber laser , optoelectronics , pulse compression , whispering gallery , wavelength , radio frequency , physics , telecommunications , radar , computer science

We have locked a whispering-gallery resonance of a fused-silica microsphere to a frequency-scanning laser. The resonance frequency is modulated by axial compression of the microsphere, and phase-sensitive detection of the fiber-coupled optical throughput is used for locking. Using a laser wavelength of either 1570 nm or 830 nm, we demonstrate a locked tracking range exceeding 30 GHz for a microsphere of 120 GHz free spectral range. This performance has been enabled by an improved compression tuner design that allows coarse tuning over 1 THz and piezoelectric tuning over 80 GHz. Compression modulation rates of up to 13 kHz have also been achieved with this tuner.

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