| Experimental Research on Single-Pass SHG from Periodically Poled LiNbO3 Crystal |
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| 作者姓名： | 桑梅 于建 薛挺 倪文俊 李世忱 |
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| 作者单位： | [1]SchoolofSceiences,TianjianUniversity,Tianjian300072 [2]SchoolofPrecisionInstrumentandOptoelectronicEngineering,OptoelectronicInformationSceienceandTechnologyLaboratoryofEducationalMin |
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| 基金项目： | SupportedbyScienceandTechnologyResearchingKeyItemofEMC(No .0 2 0 4 2 ) . |
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| 摘 要： | Quasi-phase-matching(QPM) periodical poled LiNbO3 （PPLN） is designed and successfully fabricated to enable second harmonic generation (SHG),The samples were Z-cut 0.5 mm thick and grating period is A=6.8 μm for the first order QPM of contimual wave λ=1.064μm which is emitted by Nd:YAG laser at room temperature 27℃,The output single-pass SHG power was tested by an authorized optical system.The normalized max conversion efficiency is calculated to be 0.25% (W.cm)^-1,The fabrication and parameters calculated method are introduced,and testing scheme is described in this paper,Even some ideas to improve conversion efficiency are offered.
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| 关 键 词： | 周期性极化LiNbO3 晶体 电场极化技术 SHG 实验研究 QPM 铁电材料 |
Experimental Research on Single-Pass SHG from Periodically Poled LiNbO3 Crystal |
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| SANG Mei ,YU Jian ,XUE Ting ,NI Wen jun ,LI Shi chen.Experimental Research on Single-Pass SHG from Periodically Poled LiNbO3 Crystal[J].Transactions of Tianjin University,2003,9(1):7-10. |
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| Authors: | SANG Mei YU Jian XUE Ting NI Wen jun LI Shi chen |
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| Institution: | 1. School of Sciences, Tianjin University, Tianjin 300072, China; School of Precision Instrument and Optoelectronic Engineering, Optoelectronic Information Science and Technology Laboratory of Educational Ministry of China, Tianjin University,Tianjin 300072,
2. School of Precision Instrument and Optoelectronic Engineering, Optoelectronic Information Science and Technology Laboratory of Educational Ministry of China, Tianjin University,Tianjin 300072, China |
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| Abstract: | Quasi-phase-matching (QPM) periodical poled LiNbO3(PPLN) is designed and successfully fabricated to enable second harmonic generation(SHG).The samples were Z-cut 0.5 mm thick and grating period is Λ=6.8 μm for the first order QPM of continual wave λ=1.064 μm which is emitted by Nd∶ YAG laser at room temperature 27 ℃. The output single-pass SHG power was tested by an authorized optical system. The normalized max conversion efficiency is calculated to be 0.250%(W*cm)-1.The fabrication and parameters calculated method are introduced, and testing scheme is described in this paper. Even some ideas to improve conversion efficiency are offered. |
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| Keywords: | periodically poled LiNbO 3(PPLN) quasi phase matching (QPM) second harmonic generation(SHG) |
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