共查询到18条相似文献,搜索用时 516 毫秒
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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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用时域ABCD矩阵对调Q锁模激光器的研究 总被引:3,自引:3,他引:0
用时域ABCD矩阵讨论了调Q锁模脉冲激光器输出脉冲的宽度和啁啾特性,主要给出了调Q元件作为幅度调制元件时的时域ABCD矩阵,并将光脉冲在激光腔中往返一周的ABCD矩阵写出,用此矩阵讨论了它对锁模脉冲的影响.给出了Nd:YAG激光器中用Cr4+:YAG作调Q元件时的调Q锁模脉冲激光器特性,并讨论了腔内色散、饱和吸收强度、增益带宽对输出脉冲特性的影响.用时域ABCD矩阵大大简化了计算过程. 相似文献
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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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全光纤调Q掺铒光纤激光器的脉冲研究 总被引:5,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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采用氙灯泵浦新型晶体Nd:Sr5(PO4)3F,以KTP晶体腔内倍频,实现了该晶体0.5295μm绿光激光BDN染料片调Q运转。测量了输出绿光激光的特性及不同腔长和染料片小信号透过率情况下的输出能量及脉冲宽度,给出了染料片调Q腔内倍频的耦合波方程组,数值求解该方程组,所得的理论数据与实验结果较好地相符。 相似文献
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在不同初始边界条件下数值求解描述全光纤声光调Q双包层光纤激光器的速率方程,得到前向抽运结构和后向抽运结构下激光器上能级粒子数在增益光纤中的分布,以及脉冲能量、平均功率、脉宽、光纤中储能与脉冲重复频率、抽运合束器对信号光透过率、抽运功率的相互关系.从谐振腔内放大自发辐射光的产生影响谐振腔损耗的角度分析仿真结果,并实验验证两种抽运方式对输出脉冲功率和脉冲宽度的影响.结果表明:不同脉冲重复频率下抽运方式会对全光纤声光调Q激光器性能产生显著影响,为获得较好的脉冲输出性能,在重复频率较低
关键词:
光纤激光器
Q')" href="#">声光调Q
抽运方式 相似文献
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H. Aman 《Journal of Russian Laser Research》2013,34(1):59-62
We describe the design and operation of a diode-pumped compact and efficient Nd:YAB laser operating at 1338 nm. We use a passive Q-switch V:YAG crystal to achieve 1 mJ Q-switched pulses at the laser output. The laser elaborated provides an average power of 1.5 W in the CW regime and 1 W in Qswitched mode with an optical efficiency of 15 and 10%, respectively. A 65 mm plano-concave cavity is formed with an output in the TEM00 mode. At a pulse width of 15 ns, the achieved peak power is 66 kW. 相似文献
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Zhenfang Peng Yufei Ma Renpeng Yan Xudong Li Ying He Xin Yu Yao Tong Lin Ge Jiang Li 《Journal of Russian Laser Research》2018,39(2):187-191
Using simultaneously both an acousto-optic (AO) modulator and a Cr4+:YAG saturable absorber in the cavity, we demonstrate for the first time the performance of a diode-pumped doubly Q-switched Nd:YAG ceramic laser. In contrast to purely acousto-optic Q-switched laser, this doubly Q-switched laser can generate shorter and more symmetric pulses. At an absorbed pump power of 10 W and a repetition rate of 20 kHz, the pulse width is compressed to 30 and 25 ns, respectively. 相似文献
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A compact, diode-pumped passively Q-switched Nd3+:Gd3Ga5O12 (Nd:GGG) laser with Cr4+:YAG saturable absorber has been successfully demonstrated. Stable Q-switched pulses with pulse energy of 100 ??J and high peak power of 14 kW have been obtained. The pulse width was as short as 7 ns with low repetition rate of 10 kHz. The dependence of pulse width, pulse repetition rate, pulse energy and pulse peak power on pump power have been measured respectively. Experimental results reveal that the Nd:GGG crystal with Cr4+:YAG saturable absorber is suitable for narrow pulse width and high power passively Q-switched lasers. 相似文献
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报道了半导体激光器端面抽运不同结构的声光调Q的双包层光纤激光器的脉冲输出特性. 对前向、后向不同抽运方式的掺镱调Q双包层光纤激光器在输出平均功率,调Q脉冲宽度及脉冲稳定性进行了对比及讨论;其中后向抽运的光纤激光器,在10kHz重复频率调制下,获得了斜效率为60%的平均功率输出,其脉冲宽度为52ns,单脉冲能量为03mJ. 最后利用不同抽运方式下的速率方程,理论分析调Q脉冲的特性,分析结果与实验相符.
关键词:
双包层光纤激光器
声光开关
前向抽运
后向抽运 相似文献
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J. P. Shen 《Laser Physics》2012,22(11):1664-1666
We report a compact passively Q-switched and Mode-locked Nd:GdVO4 laser based on a semiconductor saturable absorber mirrors (SESAM). At a pump power of 12 W, the average output power was obtained to be 1.8 W with the repetition rate of the Q-witched envelope 80 kHz and 500 ns pulse width. The mode-locked pulses interval within the Q-switched envelope was about 1ns, corresponding to the high repetition of 1 GHz. 相似文献
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We present an efficient and compact passively Q-switched flash-lamp-pumped Nd:Ce:YAG singlelongitudinal-mode (SLM) laser system. With Cr4+:YAG as a saturable absorber, we design a three-plan resonant reflector for generating smooth SLM Q-switched pulses. We provide a theoretical calculation and optimization of the resonant reflector for improving the longitudinal-mode selection ability. We obtain a stable SLM output with a single-pulse energy of 10 mJ and a pulse width of 10.7 ns at 10 Hz. The near-diffraction-limited beam-quality parameter M2 is less than 1.5. The system can operate with a repetition rate from 1 to 10 Hz. We achieve the stable laser operation with less than 3% fluctuation of the pulse energy within 10,000 shots. 相似文献
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G. Bergamasco P. Calvelli W. Cecchetti P. Polloni 《Optical and Quantum Electronics》1993,25(4):271-273
Passive pulse stretching in a Q-switched Nd: glass laser using a dye as a two-photon absorber is described. The lengthening of pulses was evaluated by means of computer calculations. Pulses 350-ns long have been observed experimentally. 相似文献