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采用放大1064 nm掺镱光纤激光器作为泵浦源,实现了中红外3.8μm MgO:PPLN光参量振荡(OPO)激光输出。在泵浦源中,采用分布式反馈激光器(DFB)作为种子源来实现光纤激光窄线宽的调制,实现线宽2.5 nm到0.1 nm的压缩,最大平均输出功率可达40 W。进一步对不同泵浦线宽条件下中红外3.8μm MgO:PPLN OPO激光进行研究,最终在泵浦功率为18.1 W、线宽为0.1 nm、重频为1 MHz、脉宽为2 ns时,获得了最高平均输出功率为2.06 W的3822.5 nm激光输出,光-光转换效率为11.38%,光束质量为M2=2.34,提高了窄线宽泵浦对中红外MgO:PPLN OPO激光输出效率。 相似文献
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研制了高功率连续单频Nd:YVO4激光器。在考虑激光晶体因吸收泵浦光而产生的热透镜效应的基础上,设计了六镜环行激光谐振腔,采用两个光纤耦合输出的高功率激光二极管双端端面泵浦结构,在总泵浦功率为32.3W的情况下,得到10.4W的单频1.064μm红外输出,斜效率为43.7%,长期功率稳走性优于1%(4h),激光器自由运转时的频率漂移小于150MHz(1min)。 相似文献
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2 μm单纵模激光频率短期不稳定度的测量 总被引:1,自引:0,他引:1
利用光纤延时自拍法对固体激光器输出激光频率的短期不稳定度进行了测量.Tm,Ho:YLF微片激光器具有毫瓦量级的单纵模、窄线宽的输出,实验测量了光纤延时长度为500 m下,积分时间为2 ms,4 ms,40 ms,100ms的拍频信号.利用自拍频法获得了光纤延时长度为100 m,200 m,300 m,400 m,500 m,对应的时间延时长度为0.5μs,1μs,1.5μs,2μs,2.5μs下的输出激光的自拍频信号,得出单频激光器的频率不稳定度为1.48 kHz/μs,最后对激光频率小稳定度与激光线宽的关系进行了讨论. 相似文献
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搭建了一台主振荡功率放大(MOPA)结构的单频脉冲全光纤激光器。通过对线宽为 20 kHz 的连续单频激光器进行强度调制,获得了重复频率 10 MHz、脉宽约 8 ns、平均功率约 0.5 mW 的单频脉冲种子激光。采用多级掺镱光纤放大器对脉冲种子激光进行级联放大,获得了平均功率 300.8 W 的高功率激光输出。目前,激光器输出功率仅受限于泵浦功率,有望通过增加泵浦功率进一步提高输出功率。 相似文献
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激光二极管泵浦的高效、单频Nd:YVO4激光器 总被引:2,自引:0,他引:2
对激光二极管端面泵浦的单频Nd:YVO4激光器进行了研究,研究了不同输出耦合率情况下输出功率随泵浦功率的变化曲线及光-光转化效率随输出耦合率的变化曲线,实验结果与理论分析结果基本一致.当泵浦功率为2.2 W时,得到瓦级单频1064 nm激光输出,最高光-光转化效率为47.2%. 相似文献
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激光二极管抽运的高输出单频稳频Nd:YVO4激光器 总被引:4,自引:0,他引:4
研制了光纤耦合的激光二极管抽运的单频稳频Nd:YVO4激光器。在输入抽运动率为6W的情况下,获得2W稳定单频红外输出,光-光转换效率为33.3%,电-光转换效率为10%。通过边带稳频系统将输出激光锁定在法布里-珀罗共焦参考腔的中心频率上,频率稳定性优于400kHz。 相似文献
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LD泵浦Nd:YAG微片激光器 总被引:3,自引:0,他引:3
LD泵浦Nd:YAG微片激光器结构简单紧凑,与半导体激光器相比,前者具有激光线宽窄、光束质量好、相干长度长等优点,因此在一些测量领域有着较好的应用前景。目前对LD泵浦Nd:YAG微片激光器的实验工作主要是获得单频、单模连续输出和线性频率调制特性研究。本文综述了近几年来LD泵浦Nd:YAG微片激光器的研究方向、成果及应用,主要介绍了各国对LD泵浦Nd:YAG微片激光器的调频特性的研究状况 相似文献
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利用外腔谐振倍频获得高效倍频绿光 总被引:3,自引:0,他引:3
用全固化单频Nd:YAG激光器输出的红外激光泵浦由分离元件组成的MgO:LiNbO3倍频腔。通过优化倍频腔的结构,在倍频腔的红外激光输入为440mW时,获得330mW单纵模绿光输出,倍频效率达75%。 相似文献
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Zhenguo Shan Xiaohua Shen Zuliang Fu Guosong Huang Yuzheng Tu Su Yin Liqing Shen Fuzheng Zhou 《Chinese Journal of Lasers》1993,2(4):289-294
A new experimental result obtained for the first time about LD pumped Nd: YAG microchip lasers in China is presented. The output power reached 62.5mW, when the input power was 340mW. The optical efficiency was 18%. The experimental setup and the unique characteristics of the laseers are given and discussed. 相似文献
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Supported by the National High Technology Project.YAN Ping HE Bin WEI Guanghui 《Chinese Journal of Lasers》2000,9(6):481-487
1 Introduction Inhighpowerlasersystemhighlystablesolidstatelaserisvitallyimportant.However,duetothetemperaturefluctuationintheLDpumpsourceandthelengthfluctuationoflaserresonantcavitiesLD pumpedsolidstatelasershavepowerinstabilitiesofaround± 10 % .Withamo… 相似文献
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In high power laser systems, the stability of the seed laser is vitally important. This paper presents the work on the design and manufacture of a highly stable LD pumped solid state seed laser which has the advantages of being all solid state, compact, easy to manufacture and low cost. The laser was composed of two parts. One was an LD pumped 0.5 mm thin Nd: YLF laser system in which the instability was around±6% (3σ). The other was a close-looped laser power control system using external cavity power feedback. Using an electro-optic modulator, a 1×2 optical fiber splitter and a signal processing circuit, we successfully realized the highly stable LD pumped Nd: YLF laser in which the instability of laser output power was lower than±0.2 %/hour (3σ). A digital PID (Proportion, Integration and Differentiation) control method was used with a control frequency of 40 kHz. The 3 mW of highly stable laser power through the optical fiber was obtained. 相似文献
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B. Q. Yao L. Ke Q. Wang Z. G. Wang C. T. Wu X. M. Duan Y. L. Ju Y. Z. Wang 《Laser Physics》2009,19(11):2077-2081
The Short term frequency stability characteristics of 2 μm single frequency Solid-state lasers was investigated. The two laser
systems of 2 μm single longitudinal mode oscillation Tm, Ho:YLF microchip laser and Ho:YAG NPRO laser were designed and constructed.
The Short term frequency stability of these two laser were measured with the fiber delay self-beating heterodyne method. The
3dB width of the relative frequency fluctuation of Tm, Ho:YLF microchip laser and Ho:YAG NPRO laser were measured to be 895
and 736 Hz with 500 m fiber optical (2.5 μs delay). The proportional relation between the lasing fluctuation and the delay
time were 358 and 263 Hz/μs, respectively. The vibration experiment was presented and it indicated that the NPRO Ho:YAG was
more terrible to the influence of vibration, which is important in the practical application of wind measurement lidar. 相似文献
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报道了用两个1.5W激光二极管偏振耦合端面泵浦的声光调Q内腔倍频Nd:YAG激光器。输出532nm绿光重复频率1KHz时,最大峰值功率为2.23KW,最窄脉宽为18ns,平均功率40mW。最高重复频率30KHz。重复频率15kHZ时,最高平均率128mW。对声光调Q内倍频Nd:YAG激光器的动态特性进行了理论分析及计算。 相似文献
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The LNYAB self-doubling laser pumped by (LD) has been developed for the first time. The properties of the lasers are much better than those of NYAB self-doubling lasers pumped by LD. The LNYAB self-doubling laser pumped by LD can be operated in TEM_(00) mode with threshold pumping power of 3.6mW which is lower than that of LD pumped NYAB self-doubling lasers by 74%. The output power is 29mW at 0.531μm in green region with optical-to-optical efficiency of 4.8% which is higher than that of NYAB self-doubling laser by 20%. 相似文献