共查询到17条相似文献,搜索用时 46 毫秒
1.
报道了双Nd:YAG棒串接V型折叠腔腔内KTP和频全固态黄光激光器,得到了3 W连续波589 nm黄光输出.为了提高黄光输出功率,采用了两种手段:一是通过优化腔型设计使得两束基频在腔内达到了最佳的空间重合,二是通过选择合适大小的二极管激光器的抽运功率使得两束基频在腔内达到了最佳的功率配比.
关键词:
全固态激光器
Nd:YAG激光器
黄光
腔内和频 相似文献
2.
报道了高功率准连续波腔内和频全固态黄光激光器的研究结果.为获得高功率的黄光输出,首先,激光器采用准连续方式运转,在保持抽运水平的条件下降低热效应,从而提高光束质量和光光转换效率;第二,采用热近非稳腔腔型设计,双棒串接补偿热致双折射技术,获得大基模体积高光束质量的基频光;第三,通过优化腔型,采用L型共折叠臂平-凹对称腔,使两束基频光达到空间重合且满足功率配比.通过这些方法,得到了输出功率7.6W,重复频率1.1kHz的准连续波黄光输出.据我们所知,这是目前腔内和频方案所获得的最高功率全固态黄光输出.
关键词:
黄光激光
腔内和频
Nd:YAG激光
全固态激光器 相似文献
3.
《工程物理研究院科技年报》2009,(1):151-152
钠信标和瑞利信标是目前科学家们仅能采用的两种人造激光信标,而其中钠信标相比瑞利信标高度更高、斜程误差更小,更适合用于人造激光信标,将会在天文观测中得到应用。因此研制钠信标光源对于自适应光学校正具有重要的意义。由于钠原子吸收特性,钠信标光源的中心波长必须与钠原子的D2a吸收线(589.159nm)对准,且激光线宽小于3GHz,因此突破大功率钠信标光源技术面临诸多困难与挑战。 相似文献
4.
报道了一台800 Hz,6.2 W外腔和频的589 nm黄光激光器。基频激光器均采用双棒串接平平对称腔,增益介质为Nd:YAG晶体,采用声光调Q方式分别获得11.1 W的1 064 nm激光和12.6 W的1 319 nm激光。和频晶体采用三硼酸锂(LBO),尺寸为4 mm×4 mm×30 mm,采用Ⅰ类非临界相位匹配。将两束激光通过分光镜合束,聚集后注入LBO晶体,获得589 nm黄光最大输出功率为6.2 W,脉宽为50 ns,和频效率26.2%。x方向和y方向的光束质量平方因子分别为3.20和3.61。 相似文献
5.
报道了一台800 Hz,6.2 W外腔和频的589 nm黄光激光器。基频激光器均采用双棒串接平平对称腔,增益介质为Nd:YAG晶体,采用声光调Q方式分别获得11.1 W的1 064 nm激光和12.6 W的1 319 nm激光。和频晶体采用三硼酸锂(LBO),尺寸为4 mm×4 mm×30 mm,采用Ⅰ类非临界相位匹配。将两束激光通过分光镜合束,聚集后注入LBO晶体,获得589 nm黄光最大输出功率为6.2 W,脉宽为50 ns,和频效率26.2%。x方向和y方向的光束质量平方因子分别为3.20和3.61。 相似文献
7.
8.
报道了全固态连续波555 nm激光器.555 nm激光是分别由Nd:YAG和Nd:YVO4晶体的946 nm和1342 nm谱线非线性和频产生,两条谱线在各自晶体对应能级跃迁分别为4F3/2-4Ⅰ9/2和4F3/2-4Ⅰ13/2.实验中采用复合折叠腔结构,利用LBOI类临界相位进行腔内和频,当注入Nd:YAG和Nd:YVO4晶体的泵浦功率分别为20 W和10 W时,获得1.06 W的TEM00连续波555 nm激光输出.4小时功率稳定度优于±3.3%.实验结果表明采用两种激光晶体进行腔内和频是获得激光的高效方法,并可以应用到其它两种激光晶体进行腔内非线性和频,获得更多不同波长激光输出. 相似文献
9.
本文报道了一种全固态腔内和频608.1 nm激光器。在激光谐振腔两个分臂中,两支激光二极管分别泵浦Nd: YVO4和Nd: YAG晶体,分别选择1 342 nm波长(Nd: YVO4晶体的4F3/2-4I13/2谱线)与1 112 nm波长(Nd: YAG晶体的4F3/2-4I11/2谱线)振荡并进行腔内和频。通过优化谐振腔设计,腔内两个波长获得了较好的模式匹配。在两个分臂的交叠部分,利用LBO I类相位匹配进行和频,获得和频608.1 nm激光输出。实验表明,当Nd: YVO4与Nd: YAG晶体泵浦功率分别为600和740 mW时,获得了功率为23.8 mW、波长为608.1 nm激光输出,激光输出稳定、噪声低。利用本文提出的和频结构是获得608.1 nm激光输出较为有效的方法。 相似文献
10.
11.
Very little, if any, has been published on optically pumped 850 nm vertical-cavity surface-emitting lasers (VCSELs), particularly for doped structures. This paper investigates GaAs-based VCSELs which have not been optimized for optical pumping work. Characterisation was carried out for both pulsed and continuous wave (CW). Pulsed operation causes a lower rise in temperature, thus postponing the onset of thermal rollover, and allowing the device to be operated at higher powers. A threshold of ∼160 kW/cm2, and single mode output with incident power density of up to 225 kW/cm2 were obtained. From the simulation work done, it has been observed that for optically pumped VCSELs, at higher pump density, there was faster turn on and higher output power, and that dilute nitride active material give better output performance compared to GaAs. 相似文献
12.
LDA抽运Nd:YAG/KTP腔内和频589 nm连续波激光器 总被引:3,自引:3,他引:0
报道了一种激光二极管阵列(LDA)抽运Nd:YAG双波长和频黄光激光器黄激光是由Nd:YAG晶体的1064 nm和1319 nm谱线腔内和频产生以KTP为和频晶体,采用Ⅱ类临界相位匹配,在12 W的808 nm抽运功率下,获得了最高功率为430 mW连续波基横模的589 nm黄激光输出,光光转换效率为3.6%,光束质量因子M2<1.2实验结果表明采用激光二极管阵列抽运Nd:YAG/KTP腔内和频技术是获得黄激光的高效方法,并可以应用到其它激光增益介质的两条谱线进行腔内和频,获得更多不同颜色的单谱线激光输出 相似文献
13.
Yikun Bu Quan Zheng Qinghua Xue Yingxin Cheng Longsheng Qian 《Optics & Laser Technology》2006,38(8):565-568
A design of LD-pumped Nd:YVO4 laser that generates simultaneous laser action at wavelengths 1064 and 1342 nm by optimizing film design is presented. An optimized continuous-wave (cw) yellow laser at 593.5 nm in room temperature is obtained for the first time. Using type-I critical phase-matching (CPM)LBO crystal, a yellow laser at 593.5 nm is obtained by 1064 and 1342 nm intracavity sum-frequency mixing. The maximum laser output power of 85 mW is obtained when an incident pump laser of 1.8 W is used. The optical-to-optical conversion is up to 4.7%, and the power stability in 24 h is better than ±2.8%. 相似文献
14.
15.
16.
H. Yang Z. T. Jia B. T. Zhang J. L. He S. D. Liu Y. Yang X. T. Tao 《Laser Physics》2012,22(5):880-884
We report a Nd:LGGG laser at 1062 nm in the operations of the continuous-wave (CW) and passively Q-switching. The maximum
CW output power of 5.62 W was obtained, corresponding to an optical-to-optical conversion efficiency of 49.0% and slope efficiency
of 55.9%. By using Cr4+:YAG with initial transmission of 94% as the saturable absorber, for the first time, we got the maximum passively Q-switched
output power of 1.21 W, accompanied with a highest pulse repetition rate of 27.1 kHz and a shortest pulse width of 9.1 ns. 相似文献