OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 40, Iss. 20 — Jul. 10, 2001
  • pp: 3359–3364

Enhancement of two-wave coupling in a Ce:KNSBN crystal with optimum polarization of the writing beams

Bao-Lai Liang, Zhaoqi Wang, C. M. Cartwright, W. A. Gillespie, Mei-Song Ding, and Hui Zhang  »View Author Affiliations

Applied Optics, Vol. 40, Issue 20, pp. 3359-3364 (2001)

View Full Text Article

Enhanced HTML    Acrobat PDF (91 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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

OCIS Codes
(090.7330) Holography : Volume gratings
(160.5320) Materials : Photorefractive materials
(190.5330) Nonlinear optics : Photorefractive optics
(190.7070) Nonlinear optics : Two-wave mixing

Original Manuscript: December 1, 2000
Revised Manuscript: April 9, 2001
Published: July 10, 2001

Bao-Lai Liang, Zhaoqi Wang, C. M. Cartwright, W. A. Gillespie, Mei-Song Ding, and Hui Zhang, "Enhancement of two-wave coupling in a Ce:KNSBN crystal with optimum polarization of the writing beams," Appl. Opt. 40, 3359-3364 (2001)

Sort:  Author  |  Year  |  Journal  |  Reset  


  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]
  2. J. Xu, Y. Wu, S. Liu, G. Zhang, D. Sun, Y. Song, H. Chen, “High-performance self-pumped phase conjugator with a multichannel in KNSBN:Cu crystal,” Opt. Lett. 16, 1255–1257 (1991). [CrossRef] [PubMed]
  3. 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]
  4. B. L. Liang, Z. Q. Wang, G. G. Mu, J. H. Guan, C. M. Cartwright, “Diffraction properties of transmission photorefractive volume gratings in a Ce:KNSBN crystal,” Appl. Opt. 38, 5552–5555 (1999). [CrossRef]
  5. B. L. Liang, Z. Q. Wang, J. H. Guan, G. G. Mu, C. M. Cartwright, “Four-wave-mixing and edge-enhanced optical correlation in a Ce:KNSBN crystal,” Opt. Lett. 25, 1086–1088 (2000). [CrossRef]
  6. 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]
  7. P. L. Ramazza, M. Zhao, “Experimental study of two-wave mixing amplification in Cu-doped KNSBN,” Opt. Commun. 102, 93–99 (1993). [CrossRef]
  8. 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]
  9. 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]
  10. 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]
  11. H. Rajenbach, A. Delboulbe, J. P. Huignard, “Noise suppression in photorefractive image amplifiers,” Opt. Lett. 14, 1275–1277 (1989). [CrossRef]
  12. 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]
  13. W. S. Rabinovich, B. J. Feldman, G. C. Gilbreath, “Suppression of photorefractive beam fanning using achromatic gratings,” Opt. Lett. 16, 1147–1149 (1991). [CrossRef] [PubMed]
  14. Q. B. He, P. Yeh, “Fanning noise reduction in photorefractive amplifiers using incoherent erasures,” Appl. Opt. 33, 283–287 (1994). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited