| Compensation for Self-Focusing of Picosecond Pulses in Nd：Glass by Using Cascaded Quadratic Nonlinearity |
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| 引用本文： | 陈昊 文双春 朱鹤元 钱列加. Compensation for Self-Focusing of Picosecond Pulses in Nd：Glass by Using Cascaded Quadratic Nonlinearity[J]. 中国物理快报, 2004, 21(12): 2429-2432 |
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| 作者姓名： | 陈昊 文双春 朱鹤元 钱列加 |
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| 作者单位： | [1]StateKeyLaboratoryforAdvancedPhotonicMaterialsandDevices,DepartmentofOpticalScienceandEngineering,FudanUniversity,Shanghai200433 [2]SchoolofComputerandCommunication,HunanUniversity,Changsha410082 |
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| 摘 要： | One of the obstacles in obtaining high power/energy laser sources is self-focusing, which stems from the nonlinear phase shift (B-integral) accumulated during beam propagation in Kerr media. Phase-mismatched secondharmonic generation may impose a nonlinear phase shift on the fundamental with controllable sign and magnitude,which can be used to compensate for self-focusing with a single-pass configuration. We have demonstrated such a possibility for picosecond pulses theoretically and experimentally, and both configurations of pre- and postcompensation by a β-barium borate crystal have been studied in detail. Cascaded second-order nonlinearity-based compensation for self-focusing may provide an auxiliary means to the conventional B-integral control techniques.
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| 关 键 词： | 高能激光 自聚焦 非线性周相移动 硼酸钡晶体 |
Compensation for Self-Focusing of Picosecond Pulses in Nd:Glass by Using Cascaded Quadratic Nonlinearity |
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| CHEN Hao,WEN Shuang-Chun,ZHU He-Yuan,QIAN Lie-Jia. Compensation for Self-Focusing of Picosecond Pulses in Nd:Glass by Using Cascaded Quadratic Nonlinearity[J]. Chinese Physics Letters, 2004, 21(12): 2429-2432 |
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| Authors: | CHEN Hao WEN Shuang-Chun ZHU He-Yuan QIAN Lie-Jia |
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| Affiliation: | State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433 School of Computer and Communication, Hunan University, Changsha 410082 |
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| Abstract: | |
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| Keywords: | 42.60.Jf 42.65.Jx 42.65.Ky |
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