| Induced Diffraction in Phase-Mismatched Second-Harmonic Generation |
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| 作者姓名： | 苏文华 钱列加 傅喜泉 杨华 朱鹤元 |
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| 作者单位： | Research Facility for Advanced Materials, State Key Laboratory for Advanced Photonic Materials＆ Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 60538010, 10335030 and 10576009, and the Science and Technology Commission of Shanghai under Grant Nos 05JC14005 and 05SG02. |
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| 摘 要： | We show analytically that in phase-mismatched second-harmonic generation, an effective diffraction is induced at the second-harmonic （SH） frequency. Numerical simulation results agree with the analytical predictions. Compared to the case of linear propagation, the effect of the overall diffraction at the SH frequency becomes doubled due to the induced diffraction, which causes an interesting result that the SH beam width will be larger than that of the fundamental field.
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| 关 键 词： | 衍射 谐波 光学 光谱 |
| 收稿时间： | 2006-9-26 |
| 修稿时间： | 2006-09-26 |
Induced Diffraction in Phase-Mismatched Second-Harmonic Generation |
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| SU Wen-Hua,QIAN Lie-Jia,FU Xi-Quan,YANG Hua,ZHU He-Yuan.Induced Diffraction in Phase-Mismatched Second-Harmonic Generation[J].Chinese Physics Letters,2007,24(4):957-960. |
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| Authors: | SU Wen-Hua QIAN Lie-Jia FU Xi-Quan YANG Hua ZHU He-Yuan |
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| Institution: | Research Facility for Advanced Materials, State Key Laboratory for Advanced Photonic Materials & Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433 |
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| Abstract: | We show analytically that in phase-mismatched second-harmonic generation, an effective diffraction is induced at the second-harmonic (SH) frequency. Numerical simulation results agree with the analytical predictions. Compared to the case of linear propagation, the effect of the overall diffraction at the SH frequency becomes doubled due to the induced diffraction, which causes an interesting result that the SH beam width will be larger than that of the fundamental field. |
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| Keywords: | 42 65 Ky 42 25 Fx |
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