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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 23 — Nov. 13, 2006
  • pp: 11256–11264

Nonlinear phase matching locking via optical readout

Kirk McKenzie, Malcolm B. Gray, Ping Koy Lam, and David E. McClelland  »View Author Affiliations

Optics Express, Vol. 14, Issue 23, pp. 11256-11264 (2006)

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For optimal χ(2) nonlinear interaction the phase matching condition must be satisfied. For type I and type II phase matched materials, this is generally achieved by controlling the temperature of the nonlinear media. We describe a technique to readout the phase-matching condition interferometrically, and experimentally demonstrate feedback control in a degenerate optical parametric amplifier (OPA) which is resonant at both the fundamental and harmonic frequencies. The interferometric readout technique is based on using the cavity resonances at the fundamental and harmonic frequencies to enable the readout of the phase mismatch. We achieve relatively fast temperature feedback using the photothermal effect, by modulating the amplitude of the OPA pump beam.

© 2006 Optical Society of America

OCIS Codes
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes

ToC Category:
Nonlinear Optics

Original Manuscript: June 9, 2006
Revised Manuscript: October 11, 2006
Manuscript Accepted: October 11, 2006
Published: November 13, 2006

Kirk McKenzie, Malcolm B. Gray, Ping Koy Lam, and David E. McClelland, "Nonlinear phase matching locking via optical readout," Opt. Express 14, 11256-11264 (2006)

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