Free-space laser tuning of optical microcavities
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United States of America Patent
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Dec 29, 2015
Grant Date -
Aug 20, 2015
app pub date -
Feb 14, 2014
filing date -
Feb 14, 2014
priority date (Note) -
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Abstract
Methods and apparatuses for resonance tuning of microcavities are provided. An apparatus comprises a whispering gallery mode optical microcavity characterized by at least one resonance frequency; optical components configured to evanescently couple a probe laser beam into the microcavity; an absorber element in thermal contact with the microcavity; and optical components configured to illuminate the absorber element with a free space pump light beam, wherein the absorber element is configured to absorb energy from the free space pump light beam, thereby generating heat, and to transfer the heat to the microcavity, thereby inducing a shift in the at least one resonance frequency. The absorber element may be configured as a pillar forming an interfacial region with the microcavity at one of the ends of the pillar. The surface of the microcavity may be substantially free of a coating material.
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- B41M:PRINTING, DUPLICATING, MARKING, OR COPYING PROCESS....
- B82Y:SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; ....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- H01S:DEVICES USING STIMULATED EMISSION
- G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....
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