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Origin of Self-pumped Phase Conjugate Waves in KNSBN Crystals |
| ZHANG Liang-min;ZHANG Jing-wen;SHAO Zong-shu;MU Xiao-dong,
CHEN Huan-chu;JIANG Min-hua
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| National Laboratory of Crystal Materials, Shandong University, Jinan 250100 |
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| Cite this article: |
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ZHANG Liang-min, ZHANG Jing-wen, SHAO Zong-shu et al 1996 Chin. Phys. Lett. 13 523-526 |
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Abstract A multistage four-wave mixing interaction region model resulting in self-pumped phase conjugation output of the incident beam is suggested to explain the experimental observations. The competition between forward and backward two-wave mixing is demonstrated and used to explain the formation of the mechanism. The backscattering beams from random noise beams may be amplified by contradirectional two-wave mixing selectively and act as pumped beams from our experimental observations under a laser entering the negative c face of copper-doped potassium sodium strontium barium niobate crystal. The phase conjugation reflectivity of as high as 33% is measured.
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| Keywords:
42.65.Hw
42.70.Nq
42.65.–k
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Published: 01 July 1996
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| PACS: |
42.65.Hw
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(Phase conjugation; photorefractive and Kerr effects)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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42.65.–k
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