输出功率50 W的脉冲染料激光放大器

推导了准稳态下横向抽运的脉冲染料激光放大器的简化速率方程,提出了双侧横向抽运方式的脉冲染料激光放大器的设计原则和设计方法.应用高功率脉冲染料激光放大器的物理设计结果,研制了输出功率为50 W的脉冲染料激光放大器的实验装置.采用铜蒸气激光(CVL)作为抽运光,在此染料激光放大器上进行了实验研究,获得染料激光输出功率为52 W,抽运激光功率提取效率为41%.给出了染料激光波长、注入染料激光功率以及抽运激光的时间和空间匹配特性与染料激光放大器输出激光功率和抽运激光功率提取效率的相互关系,讨论了染料溶液浓度对双侧横向抽运方式的脉冲染料激光放大器的输出光束质量的影响.     

新型吡哺类激光染料的研究

本文报道新近合成的蓝-绿波段的10个激光染料,测定了这些染料的光谱数据,并用YAG激光器或N_2激光器作泵浦源,研究了它们的激光特性.     

塑料激光介质的激光特性研究

通过化学处理，将Ｒ－６４０、Ｒ－６Ｇ等激光染料掺入到聚甲基丙烯酸甲脂中制成塑料激光介质，研究了这种激光工作物质的有关激光特性。     

XeCl准分子激光泵浦的二级放大染料激光特性

本文报道了用XeCl准分子激光泵浦Rh6G染料激光振荡放大系统。分别研究了一级、二级的染料激光放大系统，测量了一些参量特性，获得了线宽为0．01A，调谐范围为470A的激光输出。二级放大的转换效率约为9％。     

固体激光与铜蒸气激光混合抽运的染料激光放大实验

采用倍频Nd:YAG绿光激光器与铜蒸气激光器混合抽运双级染料激光放大器的实验方法,通过抽运激光器精确的脉冲同步控制和匹配技术,获得了9.0W的染料激光输出,第二级染料激光放大器对抽运激光的提取效率达到了26.6%,系统总提取效率达到了13.6%.实验研究了染料激光输出功率和抽运激光提取效率随染料激光波长的变化关系.     

小型准分子激光泵浦染料激光

本文报道一种染料激光，它的泵浦阈值比用氮激光泵浦的染科激光低几十倍，调谐范围大于300A，且光束质量好。该染料激光是采用Rh6G和Coumarine120，并用我们新研制成的轴向放电激励小型XeCl准分子激光泵浦的。文中还对该纵向XeCl准分子激光的某些性能作了介绍。     

双侧横向抽运的染料激光放大器的实验研究

染料激光器以其激光光谱覆盖范围广、激光波长连续可调节、可以实现窄激光脉宽和窄激光线宽运转等特点在激光光谱学、激光受控化学反应、激光大气传播等许多领域得到了广泛的应用.为了获得高输出功率的染料激光,通常将染料激光振荡器输出的激光注入到染料激光放大器进行功率放大.本文对我们自己研制的双侧横向抽运方式的染料激光放大器进行了实验研究. 实验获得了染料激光输出功率34 W,抽运激光功率提取效率37%的结果.文中对实验结果进行了必要的分析,讨论了染料溶液浓度、染料激光波长、注入染料激光功率及抽运激光功率对染料激光放大器输出激光功率以及抽运激光功率提取效率的影响,给出了相应的实验结果曲线.(OC36)     

掺杂PM597的聚合物固体染料激光特性研究

固态染料激光器结构紧凑、应用简便、无污染、成本低,是目前染料激光器的一个发展方向.PM597是一种高效的激光染料,实验制备了掺杂不同浓度的PM597的聚合物基质的固体染料,并对其荧光光谱、激光光谱和斜率效率进行研究.固体染料具有宽带的荧光特性,荧光谱的带宽约为60 nm;激光光谱半宽约为10 nm,激光光谱的峰值波长随染料浓度的增加而发生相应的红移;PM597的浓度存在一个最佳值(2×10-4 mol/L),使介质的斜率效率达到最高,斜率效率高达50.9%.     

短腔染料激光产生超短激光脉冲串的机理分析

利用速率方程分析了短腔染料激光的瞬态行为，着重探讨了加入适量饱和吸收体后其输出皮秒（ｐｓ）和飞秒（ｆｓ）激光脉冲的方法及特性，发现与实验结果基本一致。     

新型红外激光染料

本文报道调谐范围在７００－１６７０ｎｍ新型红外激光染料，测定了用Ｎ２分子及ＹＡＧ激光泵浦的激光性能，讨论染料结构与激光性能之间的关系。这些染料有激光效率高，斯托克斯位移大及优良的光稳定性。     

CW laser pumped emerald laser

A CW laser pumped emerald laser is reported, A 34 percent output power slope efficiency is observed with longitudinal pumping by a krypton laser in a nearly concentric cavity. The laser has been tuned from 728.8 to 809.0 nm, Losses in emerald are larger than those of alexandrite determined in a similar cavity. Our data also indicate that the excited state absorption minimum is shifted from that of alexandrite.     

浅析激光器的发展与激光测距的方法

激光的出现是人类科技史上的一个伟大进步,激光技术使得测量技术变得更加精确和方便。在地形测量、工程测量和航空摄影测量以及人造地球卫星测量、月球光学定位等航天测量中广泛应用。其中,激光测距是应用最为广泛和成熟的一种,它是集光学、激光、计算机和光电子及集成电子等多项技术为一体的综合性技术。无论是在科学技术、生产建设还是军事应用方面都有着重要的意义。     

YAG laser operation by semiconductor laser pumping

Yttrium aluminum garnet (YAG) laser operation has been achieved using a single gallium arsenide laser diode as the pump. Repetition rates of 200 pulses per second have been achieved in initial experiments. Compared to flashlamp pumping, semiconductor laser pumping requires less. than 5 percent of the light energy to accomplish YAG lasing. Extraordinary repeatability of laser output, pulse to pulse, has been obtained.     

Injection-locked dye laser pumped by a xenon-ion laser

Injection locking of a dye laser is reported for a 4-mirror ring-cavity dye laser pumped by a xenon-ion laser. Both a He-Ne laser and tunable CW dye laser were used as the injection sources.     

Infrared intraband laser induced in a multiple-quantum-wellinterband laser

A multiple-quantum-well infrared laser with phonon energy ≃ 0.1 eV is proposed in which electrons, injected into the excited level of the quantum well, are efficiently removed from the ground state level by the interband stimulated process. High carrier injection is needed to provide population inversion between these levels. Analysis shows that low temperature operation of this laser is possible for both electrical and optical carrier injection. Quantum-well materials with lower electron effective mass, such as InGaAs and InAs, are preferable for these purposes     

全主动锁模激光器——预激光锁模激光器

描述一种全主动锁模激光器,它采用预激光锁模技术,脉冲宽度从300ps到1500ps连续可调,脉宽稳定性为±5％。脉冲能量为200μJ,脉冲幅度起伏小于±3％,信噪比大于10~7。     

Far-infrared raman laser with high intensity laser pumping

Theoretical and experimental results are presented for a pulsed far-infrared (FIR) molecular gas laser with high intensity laser pumping. In these FIR lasers, high intensity pumping is found to produce stimulated Raman emission at very large offsets (up to 30 GHz) from resonance with the intermediate state. A theoretical, density matrix model is developed for these lasers to account for simultaneous Raman emission on rotational levels in the ground and excited vibrational states (double Raman resonance). This theoretical approach is necessary in the case of off-resonant, high intensity pumping. Theory predicts the FIR emission frequency, the FIR laser gain, and the pump threshold intensity as a function of pump laser frequency. Experimental results are obtained onP-,Q-, andR-branch transitions in¹²CH3F and¹³CH3F using a single-mode, grating tuned CO2TEA pump laser with an intensity of up to 40 MW/cm². Good agreement is obtained between theory and experiment for the observed values of FIR emission frequency and pump threshold intensity. These results indicate that a widely tunable (150-1200 mum), pulsed FIR CH3F laser could be constructed with a tunable, multiatmospheric CO2pump laser of modest power (about 2-5 MW).     

Violet laser oscillations in a krypton ion laser

The violet output power over 500mW obtained from a krypton ion laser and successfully applied to detect cancer is reported.     

免调试固体激光器在军用激光测距系统中的应用

将IJL88200型激光测距机中的激光器改装成“免调试激光器”,并对改装前后的激光器及测距机的性能进行对比试验,取得了理想的结果。