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1.
LD泵浦Nd∶GdVO4晶体Cr4+∶YAG被动调Q激光特性研究   总被引:4,自引:2,他引:2  
考虑腔内光子数密度的空间高斯分布以及晶体热效应的影响,给出了LD泵浦Nd∶GdVO4晶体Cr4+∶YAG被动调Q 1.06 μm激光的耦合速率方程组.数值求解该方程组获得了输出激光的脉冲宽度、重复率、峰值功率以及单脉冲能量随泵浦功率的变化特性,其理论值与实验结果相符.  相似文献   
2.
通过采用非线性相位匹配的KTiOPO_4晶体,成功实现了使用LD泵浦的Nd∶YVO_4/Nd∶YVO_4/Nd∶YVO_4键合晶体激光器声光调Q输出泵浦的光参量振荡。当泵浦功率为8.29W,声光调制频率为30 kHz时,获得了0.92 W的1570 nm信号光的最大平均输出功率,信号光的最窄脉宽为1.04 ns,最大峰值功率为29.5 kW。光光转换效率:对1064 nm泵浦光为54.4%,而对808 nm二极管泵浦光束只有11.1%。  相似文献   
3.
光电子材料光学参数的无损检测   总被引:1,自引:0,他引:1  
利用消光式椭圆偏振光谱法 ,在室温下可见光区对光电子材料镓铟磷的光学参数进行了测量 ,得到该材料的折射率和吸收系数随光子能量的变化关系曲线 ,并对结果进行了分析和讨论 ,给出了镓铟磷带隙的位置  相似文献   
4.
给出了Nd∶YVO4/KTP内腔倍频声光调Q工作原理的耦合波速率方程组实现了半导体激光器(LD)抽运折叠腔倍频声光调Q绿激光的运转,在抽运光功率3.8W、重复频率10kHz时,获得绿光脉冲宽度为33.2ns,单脉冲能量为59.6μJ,峰值功率达到1.8kW数值求解耦合波方程组理论值与实验结果相符  相似文献   
5.
The intracavity photon density is assumed to be of Gaussian spatial distributions and its longitudinal variation is also considered in the rate equations for a laser diode (LD) end-pumped passively Q-switched Nd:YVO4 laser with GaAs saturable absorber. These space-dependent rate equations are solved numerically. The dependences of pulse width, pulse repetition rate, single-pulse energy, and peak power on incident pump power are obtained. In the experiment, the LD end-pumped passively Q-switched Nd:YVO4 laser with GaAs saturable absorber is realized and the experimental results are consistent with the numerical solutions.  相似文献   
6.
The intracavity photon density is assumed to be of Gaussian spatial distributions and its longitudinal variation is also considered in the rate equations for a laser diode(LD)end-pumped passively Q-switched Nd:YVO4 laser with GaAs saturable absorber.These space-dependent rate equations are solved numerically.The dependences of pulse width,pulse repetition rate,single-pulse energy,and peak power on incident pump power are obtained.In the experiment,the LD end-pumped passively Q-switched Nd:YVO4 laser with GaAs saturable absorber is realized and the experimental results are consistent with the numerical solutions.  相似文献   
7.
Gold nanorods(GNRs) with two different aspect ratios were successfully utilized as saturable absorbers(SAs) in a passively Q-switched neodymium-doped lutetium lithium fluoride(Nd:LLF) laser emitting at 1.34 μm. Based on the GNRs with an aspect ratio of five, a maximum output power of 1.432 W was achieved, and the narrowest pulse width was 328 ns with a repetition rate of 200 kHz. But, in the case of the GNRs with the aspect ratio of eight, a maximum output power of 1.247 W was achieved, and the narrowest pulse width was 271 ns with a repetition rate of 218 kHz. Our experimental results reveal that the aspect ratios of GNRs have different saturable absorption effects at a specific wavelength. In other words, for passively Q-switched lasers at a given wavelength, we are able to select the most suitable GNRs as an SA by changing their aspect ratio.  相似文献   
8.
为改善高功率激光器激光工作物质的热效应,本文采用热键合的方法研制了Nd:YVO4/YVO4复合晶体,键合晶体的波前干涉P-V值为0.082λ(λ=0.6328μm),键合面对波前的影响很小。它在LD端面连续泵浦条件下,从泵浦光到基频光的转换效率可达60%,特别当泵浦功率比较大时,键合晶体的输出功率比单块晶体有较大的提高。  相似文献   
9.
In recent years, diode-pumped, Q-switched solid-state lasers have attracted a great deal of attention because of their high efficiency, simplicity, compactness, and good frequency stability. All solid-state actively and passively Q-switched lasers have wide applications in the fields of remote sensing, information storage, coherent telecom- munications, medicine, etc.. Acoustic-optic (AO) mod- ulator is often used as the active Q-switch, and GaAs saturable absorber as the passive Q-switch[1…  相似文献   
10.
连续电荷传递反应的阻抗谱与电极反应机制的关系   总被引:1,自引:0,他引:1  
对于含有一个吸附中间物的不可逆连续电行传递反应,在较低的过电位下,电极过程的Faraday阻抗通常在复平面上显示一个低频感抗弧.在较高的过电位下,这个感抗弧将转化为容抗弧,这一转变预示着速控步骤的变化.相反,当反应速率一直被其中的一个步骤控制时,它的法拉第弛豫始终表现出容抗行为.  相似文献   
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