发明申请
- 专利标题: COMPENSATION FOR THE GOUY PHASE SHIFT IN QUASI-PHASE MATCHING
- 专利标题(中): 对相位匹配中的GOUY相位移的补偿
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申请号: US12864297申请日: 2009-01-16
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公开(公告)号: US20110063719A1公开(公告)日: 2011-03-17
- 发明人: Corin Barry Edmund Gawith , Peter George Robin Smith , Huw Edward Major
- 申请人: Corin Barry Edmund Gawith , Peter George Robin Smith , Huw Edward Major
- 优先权: GB0801322.9 20080124
- 国际申请: PCT/GB2009/000108 WO 20090116
- 主分类号: G02F1/35
- IPC分类号: G02F1/35 ; G02F1/37 ; G02F1/39 ; B29C65/00
摘要:
A sample of nonlinear optical material for use in a nonlinear optical device contains a grating comprising alternating regions of inverted and non-inverted nonlinear coefficient of the material, with the regions separated by boundaries positioned such that the grating can provide quasi-phase matching of a selected nonlinear optical interaction, and compensate for phase mismatch arising from the Gouy phase shift of one or more focused optical beams involved in the interaction. The boundary positions can be calculated for second harmonic generation or optical parametric generation and oscillation.
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