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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 12 — Apr. 20, 2013
  • pp: 2834–2840

Light turn-on transient of a whispering gallery mode resonance spectrum in different gas atmospheres

Huiyi Natalie Luo, Heejoo Shua Kim, Monica Agarwal, and Iwao Teraoka  »View Author Affiliations


Applied Optics, Vol. 52, Issue 12, pp. 2834-2840 (2013)
http://dx.doi.org/10.1364/AO.52.002834


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Abstract

We examine the resonance spectrum change after turning on the light to feed the fiber taper evanescently coupled to a silica whispering gallery mode (WGM) resonator surrounded by different gases at different pressures. The resonance shifted to a longer wavelength, indicating a temperature rise, before reaching a steady state. The increment was proportional to the power of the light and approximately reciprocally proportional to the thermal conductivity of the surrounding gas, whereas the rate of the shift was approximately proportional to the thermal conductivity. The temperature rise, caused by absorption of intense WGM in silica, was significant even when the wavelength scan range contained only a few tall resonance peaks. We then estimated the power of heat generation and the mean power of WGM during the wavelength scan.

© 2013 Optical Society of America

OCIS Codes
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(260.5740) Physical optics : Resonance
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: December 21, 2012
Revised Manuscript: March 4, 2013
Manuscript Accepted: March 12, 2013
Published: April 17, 2013

Citation
Huiyi Natalie Luo, Heejoo Shua Kim, Monica Agarwal, and Iwao Teraoka, "Light turn-on transient of a whispering gallery mode resonance spectrum in different gas atmospheres," Appl. Opt. 52, 2834-2840 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-12-2834

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