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利用腔增强倍频产生紫光的连续波输出

CW Violet-light Generation Based on Cavity-enhanced Frequency Doubling
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摘要 用一个780 nm的光栅外腔反馈半导体激光器作为泵浦源,使用环形腔和一块I型的一阶准相位晶体实现了780 nm的腔增强倍频.计算基频光波长与晶体最佳匹配温度的关系,实验测得基频光波长为781.12 nm和781.79 nm时的最佳匹配温度.通过合理的腔型设计及参数选择,获得390 nm紫光的连续波输出.整个环形腔通过Pound-Drever-Hall方法来锁定.在基频光的功率为88 mW时,获得了紫光的最大输出功率为4.3 mW,倍频转换效率为4.9%. A grating-stabilized external cavity diode laser is used as a fundamental beam for frequency doubling of 780nm light with a first-order type-I quasi-phase matching crystal in a ring cavity. The relationship between the fundamental wavelength and the optimal matching temperature is calculated, and the optimal matching temperatures for fundamental waves at 781.12 nm and 781.79 nm are measured. Through the appropriate design of cavity structure with corresponding parameters, a continuous wave (CW) violet-light is generated. The ring cavity is locked with the Pound-Drever-Hall method. The highest violet-light output power 4.3 mW is achieved for the pumping power of 88 mW with a conversion efficiency of 4. 9%.
出处 《福建师范大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第2期40-44,共5页 Journal of Fujian Normal University:Natural Science Edition
基金 教育部留学回国基金(LXKQ1002) 福建省自然科学基金资助项目(2012J01010)
关键词 倍频 环形腔 PPKTP晶体 frequency doubling ring cavity PPKTP crystal
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参考文献16

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