Abstract

We have improved the two-wave coupling amplification and the signal-to-noise ratio of an amplified signal with photorefractive cerium-doped potassium sodium strontium barium niobate (Ce:KNSBN) by employing optimum polarization orientation of the pump beam while the signal beam retains extraordinary polarization. The optimum polarization angle of the pump beam was found experimentally to be 30° with respect to the extraordinary polarization direction in a symmetrically incident system. Nearly 1.9-times enhancement of the gain and nearly 3-times enhancement of the signal-to-noise ratio were achieved at a signal-to-pump beam intensity ratio of 1:40. At a beam intensity ratio of 1:2000, a two-wave coupling gain of nearly 500 was obtained, which is much higher than the gain previously reported. Modified coupled-wave equations that involve beam fanning with certain assumptions concerning the fanning parameters were used. The numerical solution is in good agreement with the experimental data. The results are compared with those obtained with a 45°-cut BaTiO3 crystal.

© 2001 Optical Society of America

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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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2000 (1)

1999 (1)

1995 (2)

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

1994 (1)

1993 (3)

1992 (1)

J. Bergquist, Y. Tomita, M. Shibata, “Near-infrared photorefractivity in Cr-doped potassium sodium strontium barium niobate single crystal,” Appl. Phys. A 55, 61–64 (1992).
[CrossRef]

1991 (2)

1990 (1)

J. Joseph, P. K. C. Pillari, K. Singh, “A novel way of noise reduction in image amplification by two-beam coupling in photorefractive BaTiO3 crystal,” Opt. Commun. 80, 84–88 (1990).
[CrossRef]

1989 (2)

H. Rajenbach, A. Delboulbe, J. P. Huignard, “Noise suppression in photorefractive image amplifiers,” Opt. Lett. 14, 1275–1277 (1989).
[CrossRef]

H. C. Chen, Y. H. Xu, “Growth and some properties of undoped and doped (K1-x Nax)0.4(Sr1-yBay)0.8Nb2O6 single crystals with tungsten-bronze structure,” J. Crys. Growth 96, 357–362 (1989).
[CrossRef]

Bergquist, J.

Y. Tomita, J. Bergquist, M. Shibata, “Photorefractive properties of undoped, Cr-doped, and Cu-doped potassium sodium strontium barium niobate crystals,” J. Opt. Soc. Am. B 10, 94–99 (1993).
[CrossRef]

J. Bergquist, Y. Tomita, M. Shibata, “Near-infrared photorefractivity in Cr-doped potassium sodium strontium barium niobate single crystal,” Appl. Phys. A 55, 61–64 (1992).
[CrossRef]

Bian, S.

Cartwright, C. M.

Chen, H.

Chen, H. C.

H. C. Chen, Y. H. Xu, “Growth and some properties of undoped and doped (K1-x Nax)0.4(Sr1-yBay)0.8Nb2O6 single crystals with tungsten-bronze structure,” J. Crys. Growth 96, 357–362 (1989).
[CrossRef]

Delboulbe, A.

Feldman, B. J.

Gilbreath, G. C.

Guan, J. H.

Guo, B.

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

He, Q. B.

Huang, S.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

Huignard, J. P.

Jiang, H.

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

Jiang, Q.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

S. Bian, J. Zhang, X. Su, K. Xu, W. Sun, Q. Jiang, H. Chen, D. Sun, “Self-pumped phase conjugation of 18°-cut Ce-doped KNSBN crystal at 632.8 nm,” Opt. Lett. 18, 769–771 (1993).
[CrossRef] [PubMed]

Joseph, J.

J. Joseph, P. K. C. Pillari, K. Singh, “A novel way of noise reduction in image amplification by two-beam coupling in photorefractive BaTiO3 crystal,” Opt. Commun. 80, 84–88 (1990).
[CrossRef]

Liang, B. L.

Lin, J.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

Liu, S.

Mu, G. G.

Pillari, P. K. C.

J. Joseph, P. K. C. Pillari, K. Singh, “A novel way of noise reduction in image amplification by two-beam coupling in photorefractive BaTiO3 crystal,” Opt. Commun. 80, 84–88 (1990).
[CrossRef]

Rabinovich, W. S.

Rajenbach, H.

Ramazza, P. L.

P. L. Ramazza, M. Zhao, “Experimental study of two-wave mixing amplification in Cu-doped KNSBN,” Opt. Commun. 102, 93–99 (1993).
[CrossRef]

Shibata, M.

Y. Tomita, J. Bergquist, M. Shibata, “Photorefractive properties of undoped, Cr-doped, and Cu-doped potassium sodium strontium barium niobate crystals,” J. Opt. Soc. Am. B 10, 94–99 (1993).
[CrossRef]

J. Bergquist, Y. Tomita, M. Shibata, “Near-infrared photorefractivity in Cr-doped potassium sodium strontium barium niobate single crystal,” Appl. Phys. A 55, 61–64 (1992).
[CrossRef]

Shih, Y.

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

Singh, K.

J. Joseph, P. K. C. Pillari, K. Singh, “A novel way of noise reduction in image amplification by two-beam coupling in photorefractive BaTiO3 crystal,” Opt. Commun. 80, 84–88 (1990).
[CrossRef]

Song, Y.

Su, X.

Sun, D.

Sun, W.

Tian, M.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

Tomita, Y.

Y. Tomita, J. Bergquist, M. Shibata, “Photorefractive properties of undoped, Cr-doped, and Cu-doped potassium sodium strontium barium niobate crystals,” J. Opt. Soc. Am. B 10, 94–99 (1993).
[CrossRef]

J. Bergquist, Y. Tomita, M. Shibata, “Near-infrared photorefractivity in Cr-doped potassium sodium strontium barium niobate single crystal,” Appl. Phys. A 55, 61–64 (1992).
[CrossRef]

Wang, H.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

Wang, Z. Q.

Wu, Y.

Xu, J.

Xu, K.

Xu, Y. H.

H. C. Chen, Y. H. Xu, “Growth and some properties of undoped and doped (K1-x Nax)0.4(Sr1-yBay)0.8Nb2O6 single crystals with tungsten-bronze structure,” J. Crys. Growth 96, 357–362 (1989).
[CrossRef]

Yan, L.

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

Yeh, P.

Yu, J.

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

Zhang, G.

Zhang, H.

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

Zhang, J.

Zhao, M.

P. L. Ramazza, M. Zhao, “Experimental study of two-wave mixing amplification in Cu-doped KNSBN,” Opt. Commun. 102, 93–99 (1993).
[CrossRef]

Appl. Opt. (2)

Appl. Phys. A (1)

J. Bergquist, Y. Tomita, M. Shibata, “Near-infrared photorefractivity in Cr-doped potassium sodium strontium barium niobate single crystal,” Appl. Phys. A 55, 61–64 (1992).
[CrossRef]

Appl. Phys. B (1)

H. Zhang, B. Guo, H. Jiang, Y. Shih, L. Yan, “Characterization of the KNSBN:Cu crystal with two-wave coupling at visible and infrared wavelengths,” Appl. Phys. B 61, 207–211 (1995).
[CrossRef]

J. Crys. Growth (1)

H. C. Chen, Y. H. Xu, “Growth and some properties of undoped and doped (K1-x Nax)0.4(Sr1-yBay)0.8Nb2O6 single crystals with tungsten-bronze structure,” J. Crys. Growth 96, 357–362 (1989).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Commun. (3)

P. L. Ramazza, M. Zhao, “Experimental study of two-wave mixing amplification in Cu-doped KNSBN,” Opt. Commun. 102, 93–99 (1993).
[CrossRef]

H. Wang, M. Tian, J. Lin, S. Huang, J. Yu, H. Chen, Q. Jiang, “Study of two-wave coupling in Cu:KNSBN using red light,” Opt. Commun. 115, 563–567 (1995).
[CrossRef]

J. Joseph, P. K. C. Pillari, K. Singh, “A novel way of noise reduction in image amplification by two-beam coupling in photorefractive BaTiO3 crystal,” Opt. Commun. 80, 84–88 (1990).
[CrossRef]

Opt. Lett. (5)

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