Combined formation of a self-pumped phase-conjugate mirror and spatial subharmonics in photorefractive sillenites

被引:18
|
作者
Nippolainen, E [1 ]
Kamshilin, AA [1 ]
Prokofiev, VV [1 ]
Jaaskelainen, T [1 ]
机构
[1] Univ Joensuu, Dept Phys, FIN-80101 Joensuu, Finland
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D O I
10.1063/1.1344570
中图分类号
O59 [应用物理学];
学科分类号
摘要
We found that the formation of self-pumped phase-conjugate mirrors (SPPCM) in photorefractive Bi12TiO20 crystals under external alternating electric field is accompanied by strong enhancement of spatial subharmonics. This combined formation of the fundamental grating and its spatial subharmonics results in an expansion of the spatial-frequency band allowed for SPPCM recording. (C) 2001 American Institute of Physics.
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页码:859 / 861
页数:3
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