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Whispering gallery mode resonators augmented with engraved diffraction gratings |
Optics Letters, Vol. 38, Issue 3, pp. 284-286 (2013)
http://dx.doi.org/10.1364/OL.38.000284
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Abstract
We report the demonstration of whispering gallery mode (WGM) resonators augmented with diffraction gratings. We apply focused ion beam (FIB) methods to precisely engrave a surface grating directly into the perimeter of a crystalline disc. The grating provides a simple and highly directional free-space coupling mechanism with superior stability to evanescent coupling techniques. These integrated gratings can also provide control of the resonance spectrum, significantly reducing the mode density. Our FIB fabrication process does not introduce significant loss;
© 2013 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(140.4780) Lasers and laser optics : Optical resonators
(220.4000) Optical design and fabrication : Microstructure fabrication
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: October 16, 2012
Revised Manuscript: December 27, 2012
Manuscript Accepted: January 2, 2013
Published: January 17, 2013
Citation
David C. Aveline, Lukas M. Baumgartel, Guoping Lin, and Nan Yu, "Whispering gallery mode resonators augmented with engraved diffraction gratings," Opt. Lett. 38, 284-286 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-3-284
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