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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 15, Iss. 2 — Feb. 1, 1998
  • pp: 773–780

Enhancement of Čerenkovian second-harmonic-generation power with ultraviolet irradiation-formed nonlinear optical χ(2) corrugation and channel waveguide

Heihachi Sato, Hiroaki Matsuno, and Iwao Seo  »View Author Affiliations


JOSA B, Vol. 15, Issue 2, pp. 773-780 (1998)
http://dx.doi.org/10.1364/JOSAB.15.000773


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Abstract

By irradiation of a UV source through a metallic mask with a chirped periodic or periodic structure and a metallic wire onto vinylidene cyanide/vinyl acetate copolymer, the Čerenkov-radiative second-harmonic generation has been efficiently enhanced, with the channel waveguide having a chirped periodic nonlinear optical susceptibility χ(2) corrugation. By use of an ArF 193-nm laser close to an inherent absorption line of the copolymer as the UV source, not only a nonlinear optical χ(2) corrugation with the average period Λs0=20 μm and a chirping index ϕm9 but also a channel guide 60 μm wide were induced. The enhancement factor of the Čerenkovian second-harmonic-generation power achieved was 7.4 times that of a uniform nonlinear optical χ(2) scheme. This simple UV irradiation method leads to almost the same effect as is obtained by a contact electrode method, showing its feasibility for the Čerenkovian second-harmonic-generation scheme.

© 1998 Optical Society of America

OCIS Codes
(230.7380) Optical devices : Waveguides, channeled
(320.1590) Ultrafast optics : Chirping

Citation
Heihachi Sato, Hiroaki Matsuno, and Iwao Seo, "Enhancement of Čerenkovian second-harmonic-generation power with ultraviolet irradiation-formed nonlinear optical χ(2) corrugation and channel waveguide," J. Opt. Soc. Am. B 15, 773-780 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-2-773


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References

  1. For example, see M. J. Li, M. De Micheli, Q. He, and D. B. Ostrowsky, “Čerenkov configuration second harmonic generation in proton-exchanged lithium niobate guides,” IEEE J. Quantum Electron. 26, 1384–1393 (1990). [CrossRef]
  2. Y. Azumai, I. Seo, and H. Sato, “Enhanced second-harmonic generation with Čerenkov radiation scheme in organic film slab guide at IR lines,” IEEE J. Quantum Electron. 28, 231–238 (1992). [CrossRef]
  3. K. Thyagarajan, V. Rastogi, M. R. Shenoy, D. B. Ostrowsky, M. De Micheli, and P. Baldi, “Modeling of parametric amplification in the Čerenkov-idler configuration in planar waveguides,” Opt. Lett. 21, 1631–1633 (1996). [CrossRef] [PubMed]
  4. Y. Azumai and H. Sato, “Improvement of the Čerenkov radiative second harmonic generation in the slab waveguide with a periodic nonlinear optical susceptibility,” Jpn. J. Appl. Phys. 32, 800–806 (1993). [CrossRef]
  5. H. Sato and Y. Azumai, “Čerenkov radiative second-harmonic generation enhancement with a periodically corrugated nonlinear susceptibility in a slab waveguide,” J. Opt. Soc. Am. B 10, 894–897 (1993). [CrossRef]
  6. H. Sato, Y. Azumai, and H. Nozawa, “Effect of chirped nonlinear optical susceptibility corrugation on the Čerenkovian second-harmonic power in a slab waveguide,” Opt. Lett. 19, 93–95 (1994). [CrossRef]
  7. H. Sato, H. Nozawa, Y. Azumai, and I. Seo, “Demonstration of enhanced Čerenkov-radiative SHG with chirped nonlinear optical susceptibility in organic polymer waveguide,” Nonlinear Opt. 10, 319–330 (1995).
  8. It is not necessary that the guide be asymmetric. The asymmetry is due only to a technical problem in inducing a uniform poling with the remaining lower metallic electrode.
  9. H. Taub and D. L. Schilling, Principles of Communication Systems (McGraw-Hill, New York, 1971), p. 123.
  10. H. Sato and Y. Azumai, “Comparison of enhanced Čerenkov-radiative SHG power with various nonlinear optical susceptibility structures in waveguide,” in Nonlinear Optical Properties of Organic Materials VII, G. R. Möhlmann, ed., Proc. SPIE 2285, 272–281 (1994). [CrossRef]

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