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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 15, Iss. 11 — Nov. 1, 1998
  • pp: 2769–2772

Bandwidth enhancement of second-harmonic generation with quadratic spatial-soliton generation versus conventional methods

M. Ohkawa, R. A. Fuerst, and G. I. Stegeman  »View Author Affiliations

JOSA B, Vol. 15, Issue 11, pp. 2769-2772 (1998)

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A detailed numerical comparison of the bandwidth–efficiency trade-off for second-harmonic generation (SHG) achieved by the formation of two-dimensional quadratic spatial solitons versus the more conventional method of gentle focusing in the middle of a nonlinear crystal is presented. Numerical simulations for type II SHG in potassium titanyl phosphate with constant wave-vector mismatch show that the 3-dB drop-off in SHG conversion efficiency can be many multiples of π in detuning from the phase-match condition over a large range of walk-off angles and focal positions.

© 1998 Optical Society of America

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

M. Ohkawa, R. A. Fuerst, and G. I. Stegeman, "Bandwidth enhancement of second-harmonic generation with quadratic spatial-soliton generation versus conventional methods," J. Opt. Soc. Am. B 15, 2769-2772 (1998)

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  1. R. W. Boyd, Nonlinear Optics (Academic, New York, 1994); P. A. Franken, A. E. Hill, C. W. Peters, and G. Weinreich, “Generation of optical harmonics,” Phys. Rev. Lett. 7, 118 (1961); J. A. Armstrong, N. Bloemergen, J. Ducuing, and P. S. Pershan, “Interactions between light waves in a nonlinear dielectric,” Phys. Rev. 127, 1918–1939 (1962). [CrossRef]
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  3. Reviewed recently in G. I. Stegeman, D. J. Hagan, and L. Torner, “χ(2) Cascading phenomena and their applications to all-optical signal processing, mode-locking, pulse compression and solitons,” J. Opt. Quantum Electron. 28, 1691–1740 (1996). [CrossRef]
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  6. H. Y. Shen, Y. P. Zhou, W. X. Lin, Z. D. Zeng, R. R. Zeng, G. F. Yu, C. H. Huang, A. D. Jiang, S. Q. Jia, and D. Z. Shen, “Second harmonic generation and sum frequency mixing of dual wavelength Nd:YALO3 laser in flux grown KTiOPO4 crystal,” IEEE J. Quantum Electron. 28, 48–51 (1992). [CrossRef]
  7. See, e.g., G. P. Agrawal, Nonlinear Fiber Optics (Academic, San Diego, 1989), Chap. 2.
  8. R. A. Fuerst, M. T. G. Canva, D. Baboiu, and G. I. Stegeman, “Properties of type II quadratic soliton excited by imbalanced fundamental waves,” Opt. Lett. 22, 1748–1750 (1997). [CrossRef]
  9. J. P. Feve, B. Boulanger, and G. Marnier, “Experimental study of walk-off attenuation for type II second-harmonic-generation in KTP,” IEEE J. Quantum Electron. 31, 1569–1571 (1995). [CrossRef]
  10. L. Torner, C. B. Clausen, and M. M. Fejer, “Adiabatic shaping of quadratic solitons,” Opt. Lett. 23, 903 (1998). [CrossRef]

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