排序方式: 共有78条查询结果,搜索用时 15 毫秒
61.
(Tm,Ho):YLF微片激光器的实验研究 总被引:2,自引:1,他引:1
报道了一台连续792 nm Ti:Al2O3激光器纵向抽运的(Tm,Ho):YLF微片激光器.在室温条件下,当抽运功率为680 mW时,激光器在2.06 μm波长的输出功率达到90 mW.激光器阈值为380 mW,光光转换效率为13%,斜率效率为26%. 相似文献
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The generation of mid-infrared pulsed lasers was achieved in a Ho3+:YAG laser pumped gain-switched Cr^2+:Cd Se laser system with the shortest pulse duration of 4.15 ns.With a pump pulse duration of 50 ns and pump power of 2.7 W,the gain-switched Cr^2+:Cd Se laser achieved over 10 times pulse narrowing,obtaining the maximum peak power of 5.7 k W.The optical-to-optical conversion efficiency was 3.7%,which could be further improved with better crystal surface polishing quality.The laser central wavelength was measured to be 2.65μm with a bandwidth(FWHM)of 50 nm.In addition,the parameter optimization for suppressing the pulse tail was discussed,while the long cavity and high output transmissivity contributed to obtaining the single-peak pulses. 相似文献
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A high power cryogenic cooling Tm-doped (2%) GdVO4 laser double-end-pumped by fiber-coupled-diode with the center wavelength of 804.5 nm at 21 ℃ is reported. The highest continuous-wave (CW) power of 2.35 W at 1903 nm is attained at pump power of 24 W. The slope efficiency is 12.5% and the threshold is 3.2 W. Single- and double-end-pumped types are investigated. 相似文献
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A set of fiber-coupled continuous wave (CW) diode lasers has been used to pump Tm, Ho:GdVO4 and generate 2.048-μm laser radiation at liquid nitrogen temperature. The optical-optical efficiencies of 25%,output power of 3.5 W, and pumping threshold of 838 mW have been obtained and compared with those from Tm, Ho:YLF under identical experimental conditions. 相似文献
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光纤耦合二极管端泵2 μm CW双掺)Tm,Ho∶GdVO4激光器 总被引:2,自引:2,他引:0
同YLF和YAG 基质相比,在Tm-Ho∶GdVO4晶体中Tm3+离子在800 nm附近有非常强的和宽的吸收带,所以该晶体非常适合商品化的GaAlAs激光二极管泵浦.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%.相对于吸收的泵浦功率,光光转换效率为35%.由于Tm3+离子间的交叉弛豫效应,泵浦量子效率达到1.3. 相似文献
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At liquid-nitrogen temperature, at 10-kHz pulse repetition rate, Q-switched 36-ns pulses with average output power of 4 W at 2.05 μm and 4.5-W continuous wave output power with a total optical-optical conversion efficiency of 30%, were achieved from a 6% Tm, 0.5% Ho:YLiF4 laser. This laser was endpumped by a fiber-coupled laser diode emitting up to 15 W around 792 nm. The 1-m-long optical fiber carrying the pump radiation has a core diameter of 700 μm with a numerical aperture of 0.22. 相似文献
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1.2 W中红外ZnGeP2光参量振荡器 总被引:6,自引:1,他引:5
报导了利用Tm,HoGdVO4激光器抽运双谐振ZnGeP2光参量振荡器实验研究.Tm(5%),Ho(0.5%)GdVO4晶体采用液氮制冷方式,工作在77
K温度条件下.以25 W波长为800 nm的光纤耦合激光二极管抽运,2 μm激光最大平均功率7
W,脉冲宽度小于30 ns, 脉冲重复频率5 kHz到20 kHz可调.非线性频率转换晶体ZnGeP2长15
mm,55?切割,OPO谐振腔为平平腔,腔长约25 mm.在5W的2 μm激光抽运下,脉冲重复频率10
kHz,实现了信号光3.7 μm及闲频光4.5 μm中红外激光输出,参量光脉冲宽度为15~17
ns,最大平均功率大于1.2 W,光-光转换效率为20%.测量参量光输出光束全宽度远场发散角4
mrad,光束质量M2因子小于3. 相似文献