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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 10 — May. 16, 2005
  • pp: 3765–3776

Nonlinear optical coefficients and phase-matching conditions in Sn2P2S6

D. Haertle, M. Jazbinšek, G. Montemezzani, and P. Günter  »View Author Affiliations

Optics Express, Vol. 13, Issue 10, pp. 3765-3776 (2005)

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Phase matching conditions and second and third order nonlinear optical coefficients of Sn2P2S6 crystals are reported. The coefficients for second harmonic generation (SHG) are given at λ=1542 nm and 1907 nm at room temperature. The largest coefficients at these wavelengths are d111=17±1.5pm/V and d111=12±1.5pm/V, respectively. The third-order subsceptibilities χ1111(3)=(17±6)·10-20m2/V2 and χ2222(3)=(9±3)·10-20m2/V2 were determined at λ=1907 nm. All measurements were performed by the Maker-Fringe technique. Based on the recently determined refractive indices, we analyze the phase-matching conditions for second harmonic generation, sum- and difference-frequency generation and parametric oscillation at room temperature. Phase-matching curves as a function of wavelength and propagation direction are given. Experimental phase-matched type I SHG at 1907 nm has been demonstrated. The results agree very well with the calculations. It is shown that phase-matched optical parametrical oscillation is possible in the whole transparency range up to 8µm with an effective nonlinear coefficient deff≈4pm/V.

© 2005 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing

ToC Category:
Research Papers

Original Manuscript: April 15, 2005
Revised Manuscript: May 3, 2005
Published: May 16, 2005

D. Haertle, M. Jazbinšek, G. Montemezzani, and P. Günter, "Nonlinear optical coefficients and phase-matching conditions in Sn2P2S6," Opt. Express 13, 3765-3776 (2005)

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