共查询到12条相似文献,搜索用时 78 毫秒
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本文从理论出发,分析抗共振环(Anti-ResonantRing-ARR)稳定调Q 激光脉冲的作用.将新型调Q晶体Cr4+:YAG置于ARR中心,在平-ARR介稳腔中获得能量起伏0.34%的高稳调Q单脉冲输出. 相似文献
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二极管泵浦被动调Q Nd:YAG/ KTP绿光激光器 总被引:1,自引:1,他引:0
报道了LD泵浦的Nd:YAG/KTP/Cr:YAG结构被动调Q绿光激光器.当注入泵浦功率为750mW时,获得了平均功率38mW,脉冲宽度14.7ns,重复频率20.4kHz,峰值功率126.6W的调Q绿激光输出. 相似文献
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对激光二极管端面泵浦Cr4+:YAG被动调QNd:YAG激光器输出特性进行了实验研究.实验研究发现,激光器输出功率及脉冲重复频率随谐振腔长度增大而增大.为解释这一实验现象,测量了泵浦光斑在激光晶体内尺寸,同时计算了激光晶体及Cr4+:YAG晶体内的基模激光光斑半径随谐振腔长度变化.分析结果表明:激光晶体内泵浦光斑尺寸远小于激光晶体内基模光斑半径,腔模间交叠效率较低;当腔长增加时,激光晶体内的基模激光光斑减小,腔模间交叠效率增加,从而导致输出功率及脉冲重复频率随腔长增加而增加;另外,Cr4+:YAG晶体内光斑半径也随谐振腔长度减小,引起Cr4+:YAG晶体漂白时间缩短,导致脉冲重复频率随腔长增加而增加. 相似文献
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全光纤调Q掺铒光纤激光器的脉冲研究 总被引:2,自引:3,他引:2
报道一种全光纤调Q掺铒光纤激光器,在其结构中采用带有光纤光栅的光纤环形镜作为调Q装置此调Q方案同时具有对腔内损耗进行调制和对激光输出波长选择的功能理论上分析了不同臂长差时的脉冲出现情况,与实验基本相符并对激光单脉冲产生及稳定性进行了分析讨论. 相似文献
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Passive mode-locking of a pulsed Nd:YAG laser using a Cr4+:YAG saturable absorber was realized for the first time in a nearly critical stable resonator containing an antiresonant ring structure. The output energy and pulse duration are 13.5 mJ and 180 ps, respectively. The recovery time and saturable intensity for excited-state absorption of Cr4+:YAG under the action of strong laser pulses were calculated from rate equations. 相似文献
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By considering the Gaussian spatial distributions of the intracavity photon density and the initial population-inversion density, the coupled rate equations for a diode-pumped passively Q-switched and mode-locked (QML) laser with Cr4+:YAG saturable absorber are given. These coupled rate equations are solved numerically and the key parameters of an optimally coupled passively QML laser are determined for the first time. These key parameters include the parameters of the gain medium, the saturable absorber and the resonator, which can maximize the pulse energy of singly Q-switched envelope. The optimal calculations for a diode-pumped passively QML Nd:GdVO4 laser with Cr4+:YAG saturable absorber are presented to demonstrate the numerical simulation applicable. 相似文献