激光二极管

Most of the molecular characteristic absorption is very weak, and the absorption line width is very narrow that can't be measured by traditional methods.

TDLAS系统的关键是利用激光二极管有很高光谱分辨率和可调谐性的特点，可以对特定分子在特定光谱范围内的一条振转线的光谱吸收进行测量而反演吸收气体的浓度，而且能够把待测分子与背景的干扰区分开来。

Continuous wave and quasi continuous wave Tm: Ho: GdVO4 solid laser at 2.049 μm using laser-diode double-end pumping is reported.

报道了激光二极管双端面抽运Tm： Ho： GdVO4固体激光器，在2.049 μm处获得连续和准连续激光输出。

In each period, LD lights in advance of the time of the output laser pulse occurrence and quenches behind the laser pulse.

在每一个周期中，激光二极管在输出激光脉冲前的某一时刻打开，在输出脉冲后的适当时刻关断。

A home made laser diode was used to end pump a piece of 1.0 mm long Nd:YVO4 crystal dopped with 1.0%.

用国产的激光二极管端面泵浦厚2.0 mm、掺杂浓度1.0%的Nd：YVO4激光晶体，在注入泵浦光功率为8 W时，用5 mm长的I类临界位相匹配BIBO晶体获得的TEM00模蓝光输出达1.83 W。

Fittings series lasers have: a dedicated optical laser lens (spherical and non-spherical), laser diode driver circuit boards and with TTL modulation drive plate, laser-specific power supply (with a soft-start and reverse polarity protection).

激光器配件系列有：激光专用光学透镜、激光二极管驱动电路板及带TTL调制驱动板、激光器专用电源（具有软启动及极性反接保护）。

Solid state lasers doped Nd~(3+) operating at near-infrared 1.06μm have been designed into kinds of geometry including rod, disc and fiber.

激光二极管泵浦的高功率固体激光器具有效率高、光束质量好，结构紧凑、寿命长等优势，在工业生产、科学研究和军事领域都有着广泛的应用。

The absorption properties of Nd:YVO4 crystals with various doping levels and lengths are reported.The 1 064 nm laser properties are compared,and the effective stimulated emission crosssections of different doping levels are calculated with upper-level life-times we have measured.Our investigation give a good advice for the optimization of LD end-pumped Nd:YVO4 laser.

对多种掺杂浓度、长度的Nd：YVO4晶体进行了吸收性质、激光性质的研究和对比，根据实验结果和测得的上能级寿命计算了不同掺杂浓度Nd：YVO4晶体的有效受激发射截面，对激光二极管端面泵浦Nd：YVO4固体激光器的最优化有实际指导意义。

Beijing HuaYuan Star laser technology Co.,Ltd, a Chinese-American joint venture enterprise, a manufacturer which specially dedicates in Fiber assembly, packaging of fiber pigtailed semiconductor lasers, butterfly cases and butterfly packaging of high power laser diodes, and new high stable and maintenance-less fiber laser pumped by semiconductor laser diodes.

北京华源世达激光技术有限公司，是一家中美合资企业，专门致力于尾纤型激光器的生产和研发工作。主要生产尾纤型半导体激光器、碟形封装的高功率激光二极管和最新的高稳定性免维护的光纤激光器光源。

Beijing HuaYuan Star laser technology Co.,Ltd, a Chinese-American joint venture enterprise, a manufacturer which specially dedicates in Fiber assembly, packaging of fiber pigtailed semiconductor lasers, butterfly cases and butterfly packaging of high power laser diodes, and new high stable and maintenance-less fiber laser pumped by semiconductor laser diodes.

致力于尾纤型激光器的生产和研发工作。尾纤，激光器，研发，生产北京华源世达激光技术有限公司，是一家中美合资企业，专门致力于尾纤型激光器的生产和研发工作。主要生产尾纤型半导体激光器、碟形封装的高功率激光二极管和最新的高稳定性免维护的光纤激光器光源。

Radiation from a fiber coupled diode (core diameter 0.4 mm, N.A. 0.3) is coupled into Tm5% at.,Ho(0.5% at.∶GdVO4 crystal by a pair of achromatic lens for end pumping. Output power of 3.6 W at 2.048 μm is obtained under pump power of 14 W and emission wavelength of 794 nm. The optical-optical conversion efficiency is 25.7% and slope efficiency is 26.6%.

在液氮制冷晶体条件下，利用光纤耦合激光二极管及消色差光学耦合系统端面泵浦双掺5％Tm，0.5％Ho∶GdVO4晶体，在泵浦功率14 W、泵浦波长794 nm时，实现了2.048 μm激光输出，连续运转输出功率3.6 W，相应的光光转换效率为25.7％，斜率效率26.6%。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。