太阳能直接泵浦式激光器

太阳能是洁净的可再生能源,利用它来直接泵浦激光工作物质产生激光,即为太阳能直接泵浦式激光器.本文阐述了太阳能泵浦激光器的发展历程,介绍了太阳光的成像采集和非成像采集系统以及太阳能激光器的泵浦方式,并分析了掺Nd和CrNd共掺材料等激光工作物质的性能.最后经过分析,认为Cr/Yb共掺双包层光纤在太阳能泵浦激光器方面具有很大的应用潜力.     

下一代固体激光器：陶瓷激光器

在未来的许多应用中,陶瓷激光增益介质将代替单晶介质,这被认为是固体激光器的一次真正的革命.文中评述了陶瓷增益介质的发展及其优点,介绍了美国空军和陆军研究实验室对陶瓷介质特性进行的较为系统的研究.最后评论和分析了目前美国正在研制的两种具有高束质的大功率陶瓷激光器及其关键技术.     

半导体激光器

Surface-emitting semiconductor lasers can make use of external cavities and optical pumping techniques to achieve a combination of high continuous-wave output power and near-diffraction-limited beam quality that is not matched by any other type of semiconductor source. The ready access to the laser mode that the external cavity provides has been exploited for applications such as intra-cavity frequency doubling and passive mode-locking.     

军用多功能激光器

介绍了一种极具应用前景的新概念的军用多功能激光器及其发展状况。     

面发光激光器

面发光激光器，是新出现的高性能器件，它将在多媒体机、计算机、光通信中发挥重要作用，本文介绍它的特征、结构和新的功能。     

Multielectrode Semiconductor Lasers

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Multielectrode Semiconductor Lasers^①②

Multielectrode semiconductor lasers are studied via the ray method.The expression of the output photon number of N-electrode semiconductor lasers has been derived for the first time.When N=1 or 2,the expression of the output photon number fits in that of one-electrode(general)or two-electrode semiconductor lasers perfectly.     

Lasers in industry

Lasers can now be regarded as practical and economic tools with unique properties which have been utilized effectively in several applications in industry. Major applications of the laser are in thermal processes and measurements. Large amounts of concentrated energy allow microdrilling, welding, cutting, and fracturing to be simply effected in even the hardest materials. The coherence properties provide ideal sources for alignment instruments and interferometers for accurate length measurement. This paper describes these applications and their typical capabilities. Future developments and their potential are discussed, with the conclusion that the laser will be increasingly used in the manufacturing environment.     

窄线宽高效率的全光纤Yb^3＋激光器

利用光纤布拉格光栅（FBG）作为腔镜，研制了一种全光纤结构的掺Yb^2 光纤激光器。以泵浦波长978nm的LD作为抽运算，在1060.4nm波段获得了0.14nm的窄线宽激光输出。实验中发现掺Yb^3 光纤长度对激光器的阈值及输出功率均有影响，但光纤激光器的输出线宽保持不变。最大激光输出功率为2.36mW，斜率效率达到22.2%。     

半导体激光器面面观

量子阱(QW)激光器 (1)QW激光器 随着金属有机物化学汽相淀积(MOCVD)技术的逐渐成熟和完善,QW激光器很快从实验室研制进入商用化。QW器件是指采用QW材料作为有源区的光电子器件,材料生长一般     

固体薄片激光器和固体热容激光器

介绍了能够实现高平均功率的两种固体激光器：固体薄片激光器和固体热容激光器。给出了它们的工作原理和理论上的工作参数。综述了固体薄片激光器和固体热容激光器的研究历史和现状,指出了高平均功率固体激光器未来的发展方向。     

半导体激光器的可靠性

本文总结了关于半导体激光器可靠性研究的主要结果，讨论了主要退化模式，对实现高可靠性器件需要把握的主要因素进行了阐述.。     

双波长晶体激光器

本文介绍了烈波长晶体激光器的概况, 重点描述了我们在双波长晶体激光器方面的研究工作。这些工作如下:建立了多波长激光器的振荡条件, 用它分析、比较了Nd:YAG, Nd:YLF, Nd:BEL和Nd:YAlO3(Nd:YAP)等晶体实现4F3/2-4I11/2和4F3/2-4I13/2跃迁双波长激光的可能性, 分析表明上述晶体均能实现脉冲双波长激光.但只有Nd:YAP晶体能实现连续双波长激光运转。根据这判断, 我们利用Nd:YAP晶体, 首次获得了晶体双波长连续激光, l079.5 nm和1341.4 nm输出功率分别选23.9 W和25.4 W。并研制成Nd:YAG和大能黄Nd:YAP双波长激光器 实验表明, 这二种激光器中二个波长的输出具有较好的时间和空间的重叠性 此外, 我们还研制成1655 nm和1663 nm双渡长及271l nm, 2730 nm和2790 nm三波长Er:YAP脉冲激光器。     

吸收型双稳半导体激光器

对两段式吸收型双稳半导体激光器的速率方程组进行了解析求解,并逐点跟踪定义双稳环的关键点,确立了介质发射截面与双稳环宽度和高度的关系式。     

Mid-Infrared Raman Fiber Lasers

As mid-infrared (MIR) lasers show numerous applications in the field of defense, medical, materials processing, and optical communications. Investigation on MIR Raman fiber lasers (RFLs) increasingly becomes a hot topic. Compared with the traditional silica fibers, fluoride and chalcogenide glass fibers possess higher nonlinear coefficients and excellent MIR transmittances. In this article, the latest developments of the MIR RFLs using fluoride and chalcogenide glass fibers as gain media are introduced, respectively. This review article mainly focuses on the developments of MIR RFLs in aspects of output wavelength, output power, and optical efficiency. Besides, the prospect of MIR RFLs is also discussed.