8000W激光功率计

８０００Ｗ激光功率计ＯＰＨＩＲＯＰＲＴＯＮＩＣＳ公司推出了一种新型高能激光测量仪，适用于０．２～２０ｕｍ之间的任何波长。这种测量仪可测量高达８０００Ｗ的连续或平均功率，同时还可承受非常高的功率密度２０ｋＷ／ｃｍ２。８０００Ｗ型有快速的响应时间３ｓ，０...     

用二极管激励的平均功率为275W的Nd：YAG激光器

我们研制并测试了可层叠的微通道致冷式激光棒二级管泵源组件，运用于条形激光器高占空比下的直接面激励。由４１个二极管组件形成一个叠层，给出一个１３．５ｃｍ￣２的泵源阵列，它能产生峰值功率３７５０Ｗ，平均功率１０００Ｗ，平均照度７５Ｗ／ｃｍ￣２。已经做出了有８０个二极管的组件，高平均功率，全内反射，面对面激励的Ｎｄ：ＹＡＧ激光器。在脉冲重复频率２．５ｋＨｚ，脉冲电流宽度１００μｓ条件下，获得的平均功率为２７５Ｗ。     

长脉冲Nd:YAG激光器的实验研究

报道重复频率 １ｋ Ｈｚ 的长脉冲 Ｎｄ： Ｙ Ａ Ｇ 激光器,实验研究了氪灯的发光特性和激光脉冲特性。当激光的重复频率为 １ｋ Ｈｚ、占空比为 ５０％ 时,激光平均功率为 ６３ Ｗ ,峰值功率为 １２６ Ｗ 。     

LD泵浦高功率固体激光器的最新进展

高功率二极管阵列自８０年代中期出现以来，在这１０年间，二极管泵浦固体激光器在海外已取得实质性进展，最后，多模工作中，１．０６μｍ的ＣＷ输出功率已超过３００Ｗ，单频工作中也已获得了２０Ｗ的ＣＷ功率，高的光束质量、１ｋｍ高的平均功率，可重复性脉冲激光系统也已研制出来。本文概述了世界上高功率二极管泵浦固体激光器的最新进展，包括Ｑ开关激光器，特别感兴趣的是工业应用，如：激光材料加工。     

高功率铜蒸气激光器的新进展──铜激光振荡器获得85W激光输出

高功率铜蒸气激光器的新进展──铜激光振荡器获得８５Ｗ激光输出国家八·五攻关激光分离同位素项目中的铜蒸气激光专题组在他们研制的放电管直径６．５ｃｍ，极间距２００ｃｍ的铜蒸气激光振荡器上得到平均功率８５Ｗ的黄光（５７８．２ｎｍ）和绿光（５１０．６ｎｍ）双...     

产生中红外输出的氟化氘激光器

通过放电引发或反应气体快速混合引发以放热化学反应为基础的卤化氢和卤化（HCl、DF、HBr）激光器发射3～5μm波长的激光。由于该光谱区域的各种波长与大气窗相符，很适合用于通过大气的长距离光束传输。几年前，法国马可西斯的激光工业公司（CILAS）发展了在HF波长上能产生600W平均功率和DF波长上能产生250W平均功率的HF－DF激光器。然而这一激光器的长期运转需要气体连续再生和混合。对只要求低平均功率的实验来说，可采用另外途径，即对卤化氢和卤化分子光泵。气体使用和泵浦源的选择可以复盖3～5μm波长区之间的各种光谱。该途…     

钙离子复合激光的实验研究

报道了一台平均功率为５０ｍＷ的钙离子复合激光实验装置。通过改变缓冲气体压强、脉冲重复率及输入电功率等参量，分析了Ｈｅ－Ｃａ＋复合激光的工作特性，测量了一些参量之间的关系     

静态准分子激光器重复率放电的热效应

提出了在静态重复率泵浦的准分子激光器中的放电气体热膨胀模型。计算结果表明,这种热效应对激光输出平均功率与光束特性有不可忽视的影响。     

高气压横流准分子激光器的流场效应

本文采用平面剪切干涉仪测量了高气压横向流动准分子激光气体的流速。分析了放电能量使气体加热对激光输出的影响,均匀的横流技术使激光器在每秒16个脉冲频率下获得18W平均功率输出。     

500W旋转开关准分子激光器

５００Ｗ旋转开关准分子激光器黑龙江省牡丹江市光电技术研究所用了两年多的时间研制出ＥＭＪ－５００准分子激光器，经中国计量科学院测试，其激光气体为ＸｅＣｌ，激光波长为３０８ｎｎ，最大激光功率为５１８Ｗ，单脉冲能量为０．９Ｊ，重复频率为６００Ｈｉ，功率不稳...     

A CuBr laser with 1.4 W/cm3 average output power

An average laser power of 6.7 W has been obtained from a small-bore CuBr laser with a constructive active volume of 4.77 cm³ , i.e., a record specific average power of 1.4 W/cm³ for multikilohertz operation of copper vapor lasers has been achieved. It was found that the small-bore CuBr laser can operate with a neon buffer at atmospheric pressures     

一种适用于治疗鲜红斑痣的CuBr激光器

专门设计了CuBr激光放电管的结构、加热系统及激光谐振腔，使CuBr激光器在8W水平上持续稳定运行；并且黄绿激光可以分色双向输出，非常适合鲜红斑痣的治疗。     

CuBr Laser Excited by a Capacitively Coupled Longitudinal Discharge

The paper presents the study of the CuBr laser energy characteristics using capacitively coupled discharge excitation. We have studied the effect of the addition of HBr on laser performance for gas discharge tubes of different bore diameter at various input power conditions. When adding HBr pulse and average output power as well as laser efficiency more than double increase due to the shortening of the current pulse rising time and its duration. The total maximum average lasing power of 3.7 W was obtained at 0.27% efficiency. In the paper, we also notice that when adding admixtures capacitively coupled discharge pumping is superior to traditional glow discharge pumping.     

A continuously pulsed copper halide laser with a cable-capacitor Blumlein discharge circuit

Experimental characteristics of a continuously pulsed copper halide laser with a cable-capacitor Blumlein discharge circuit are reported. Quartz laser tubes 1 m in length and 1.5 and 2.5 cm in diameter were employed to study the effects of the electrical circuit, lasant, and buffer gas on laser performance. Measured properties of the Blumlein circuit are compared with an analytic solution for an idealized circuit. Both CuCl and CuBr with neon and helium buffer gas were studied. A maximum average power of 12.5 W was obtained with a 1.5 nF capacitor charged to 8 kV and discharged at 31 kHz with CuCl and neon buffer gas at 0.7 kPa in a 2.5-cm-diam tube. A maximum efficiency of 0.72 percent was obtained at 9 W average power. Measurements of the radial distribution of the power in the laser beam and the variation of laser power at 510.6 and 578.2 nm with halide vapor density are also reported. Double and continuously pulsed laser characteristics are compared, and the role of copper metastable level atoms in limiting the laser pulse energy density is discussed.     

注入种子CuBr激光器中的光谱控制

报道了采用注入种子方法．对ＣｕＢｒ激光器进行激光模式控制的实验结果。实现了单纵模ＣｕＢｒ激光脉冲的注入放大，获得了功率为１００ｍＷ水平的窄线宽铜激光辐射．在理论上分析了短脉冲高增益激光器中注入种子过程，讨论了在注入种子ＣｕＢｒ激光器中进行光谱控制的实验结果．     

Two-arm CuBr laser with a central electrode

A two-arm CuBr laser with a central electrode is reported. The laser produces maximum efficiency of 2.5% (at 42-W output power) and maximum output power of 47 W (at efficiency 2.35%). Some features of the excitation circuit and laser operation are given     

高效宽带混合染料激光研究

介绍了一种高效宽带的三元混合染料激光。在6.0WCuBr激光的泵浦下,无需更换染料,在590nm～670nm范围内均可获得线宽约为10nm,平均输出功率1W的染料激光,转换效率在18%以上,具有广泛的应用前景。     

不同放电线路中CuBr激光放电管等离子体动态阻抗特性比较

基于研制实用化CuBr激光器的目的,利用数值模拟的方法,结合实验数据,讨论了CuBr激光动力学中放电管等离子体参数变化与等离子体阻抗变化的内在联系,给出了CuBr激光管在不同放电电路各参数的表达式,与CuBr激光器动力学模型相结合,得到放电管等离子体阻抗动态演变的结果.得出放电管导通特性在不同放电线路组合中相同的结果,与实验结果完全一致.     

溴化亚铜激光放电管径向声波共振现象研究

为解决大功率溴化亚铜激光放电管中声共振造成的输出功率不稳定问题,通过数值分析的方法给出了溴化亚铜激光放电管内径向声波振动的数学模型,并获得了激光放电管内声波径向驻波分布的解析表达式,分析了放电频率与激光管固有频率的关系,明确了声共振是导致激光介质重新分布并对输出功率产生影响的原因.由此得出结论:寻求一个在声共振本征基频附近的放电频率,并且能够使激光器稳定工作,是提高激光输出功率及提高激光器效率的一种有效手段.     

Influence of the excitation circuits on the CuBr laser performance

A comparative study has been carried out of the output characteristics, electric parameters, and main kinetic plasma processes concerning CuBr laser performance during the excitation pulse. Four electric circuits were used for CuBr vapor laser excitation: WPC (without peaking capacitor); OC (ordinary circuit, i.e., with a peaking capacitor); IPC (interacting peaking circuits), and IC (interacting circuits). The calculated and experimental values are in very good agreement. The improvement of the CuBr laser performance from WPC- to IC-excitation (the laser power and efficiency increase three times) is mainly attributed to the increased physical laser efficiency, which concerns the electrooptic energy conversion with regard to plasma kinetic processes