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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 9 — Mar. 20, 2001
  • pp: 1438–1441

Theoretical Analysis of Phase-Matched Second-Harmonic Generation and Optical Parametric Oscillation in Birefringent Semiconductor Waveguides

John O. Dimmock, Frank L. Madarasz, Nikolaus Dietz, and Klaus J. Bachmann  »View Author Affiliations


Applied Optics, Vol. 40, Issue 9, pp. 1438-1441 (2001)
http://dx.doi.org/10.1364/AO.40.001438


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Abstract

We analyze the phase-matching conditions for second-harmonic generation (SHG) and optical parametric oscillation (OPO) in birefringent nonlinear semiconductor waveguides and apply these results to the model system of ZnGeP<sub>2</sub> on a GaP substrate. The analyses and numerical results show that phase matching can be achieved for OPO and SHG for reasonable guide thicknesses throughout much of the infrared, indicating significant potential applications for nonlinear birefringent waveguides. For the fundamental mode of a relatively thick guide the region of phase matching and the phase-matching angles are similar to those in bulk material. However, the waveguide has the added flexibility that phase-matched coupling can occur between the various modes of the guide. For example, the phase-matching region for SHG can be considerably extended by coupling the pump into the guide in the fundamental, <i>m</i> =, mode and phase matching to the <i>m</i> = mode of the second harmonic. Significantly, the results indicate, among other things, that ZnGeP<sub>2</sub> waveguides with harmonic output in the <i>m</i> = mode can be used for efficient SHG from input radiation in the 9.6–10.6-μm region where bulk efficiencies in this wavelength range are too small to be useful.

© 2001 Optical Society of America

OCIS Codes
(230.4320) Optical devices : Nonlinear optical devices
(250.7360) Optoelectronics : Waveguide modulators
(260.1440) Physical optics : Birefringence
(310.2790) Thin films : Guided waves

Citation
John O. Dimmock, Frank L. Madarasz, Nikolaus Dietz, and Klaus J. Bachmann, "Theoretical Analysis of Phase-Matched Second-Harmonic Generation and Optical Parametric Oscillation in Birefringent Semiconductor Waveguides," Appl. Opt. 40, 1438-1441 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-9-1438


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References

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