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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 13, Iss. 9 — Sep. 1, 1996
  • pp: 1935–1940

Rubidium titanyl arsenate difference-frequency generation and validation of new Sellmeier coefficients

D. L. Fenimore, K. L. Schepler, D. Zelmon, S. Kück, U. B. Ramabadran, P. Von Richter, and D. Small  »View Author Affiliations

JOSA B, Vol. 13, Issue 9, pp. 1935-1940 (1996)

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Rubidium titanyl arsenate (RTA), a crystallographic isomorph of potassium titanyl phosphate, shows promise for nonlinear-frequency generation throughout the 1–5-μm spectral region. Difference-frequency generation in an RTA crystal produced tunable output in the 3.2–4.2-μm wavelength range. A single 1.064-μm Nd:YAG laser pumped both a LiNbO3/sub> optical parametric oscillator used to generate a tunable signal beam and the RTA crystal used for difference-frequency generation. Conversion efficiencies were limited to 4% primarily by the large beam divergence of the signal beam. Phase-matching measurements were in excellent agreement with new IR-corrected RTA Sellmeier equations based on refractive-index measurements.

© 1996 Optical Society of America.

D. L. Fenimore, K. L. Schepler, D. Zelmon, S. Kück, U. B. Ramabadran, P. Von Richter, and D. Small, "Rubidium titanyl arsenate difference-frequency generation and validation of new Sellmeier coefficients," J. Opt. Soc. Am. B 13, 1935-1940 (1996)

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