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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 4 — Feb. 14, 2011
  • pp: 3651–3656

Planar coupling to high-Q lithium niobate disk resonators

G. Nunzi Conti, S. Berneschi, F. Cosi, S. Pelli, S. Soria, G. C. Righini, M. Dispenza, and A. Secchi  »View Author Affiliations


Optics Express, Vol. 19, Issue 4, pp. 3651-3656 (2011)
http://dx.doi.org/10.1364/OE.19.003651


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Abstract

We demonstrate optical coupling to high-Q lithium niobate disks from an integrated lithium niobate waveguide. The waveguides are made by proton exchange in X-cut lithium niobate substrate. The disks with diameter of 4.7 mm and thickness of 1 mm are made from commercial Z-cut lithium niobate wafers by polishing the edges into a spheroidal profile. Both resonance linewidth and cavity ringdown measurements were performed to calculate the Q factor of the resonator, which is in excess of 108. Planar coupling represents the most promising technique for practical applications of whispering gallery mode resonators.

© 2011 OSA

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.3730) Integrated optics : Lithium niobate
(140.4780) Lasers and laser optics : Optical resonators
(230.5750) Optical devices : Resonators
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Integrated Optics

History
Original Manuscript: November 15, 2010
Revised Manuscript: December 16, 2010
Manuscript Accepted: December 23, 2010
Published: February 10, 2011

Citation
G. Nunzi Conti, S. Berneschi, F. Cosi, S. Pelli, S. Soria, G. C. Righini, M. Dispenza, and A. Secchi, "Planar coupling to high-Q lithium niobate disk resonators," Opt. Express 19, 3651-3656 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-4-3651


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References

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