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High Efficient Continuous-Wave Ho:Y/kG Laser Pumped by a Diode-pumped Tm:YLF Laser at Room Temperature 下载免费PDF全文
DUAN Xiao-Ming, YAO Bao-Quan, ZHANG Yun-Jun, SONG Cheng-Wei, GAO Jing, JU You-Lun, WANG Yue-Zhu( National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001) 相似文献
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A Laser-Diode-Pumped Widely Tunable Single-Longitude-Mode Tm:YAP Laser at Room Temperature 总被引:1,自引:0,他引:1 下载免费PDF全文
A laser-diode-pumped widely tunable single-longitude-mode TIn:YAP laser in 2μm eye-safe region is built. Con- tinuous tanable range from 1899nm to 2025nm is achieved with the maximum laser output power of 225mW at 1989 am. In addition, the TIn:YAP laser operating under multimode and slngle-mode conditions is discussed. 相似文献
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为实现室温下小型化、高效率的1.9 mm激光输出,采用793.5 nm激光二极管泵浦Tm:YAP晶体,晶体采用热电制冷及风冷的方式控制在18 ℃,采用1∶1的聚焦耦系统,获得功率为2.2 W、中心波长为1 928 nm的激光输出,光光转换效率为31%,斜率效率达41%。对影响激光输出的耦合输出率、腔型、腔长、晶体工作温度等因素进行了实验分析,实验结果表明:输出功率的变化与温度基本成线性关系,当增加激光谐振腔长时,由于高阶模式损耗加大以及晶体热透镜效应的加重导致腔内损耗加大,输出功率和斜率效率都有所下降。 相似文献
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We demonstrate a Fe:ZnSe laser gain-switched by a ZnGeP_2 optical parametric oscillator(OPO) under the pulse repetition frequency of 1 kHz at room temperature. The 2.9 μm signal light of the OPO is employed as the pump for the Fe:ZnSe laser. The maximum output power of the Fe:ZnSe laser is 58 mW with the pulse duration of 2.7 ns under the incident pump power of 280 mW, corresponding to a peak pulse power of 21.5 kW and an optical-to-optical efficiency of 20.7%. The spectrum of the Fe:ZnSe laser has a range of 4030.2–4593.6 nm with a dip at 4187.1–4340.4 nm due to the absorption of CO_2. 相似文献
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Comparative investigation of long-wave infrared generation based on ZnGeP2 and CdSe optical parametric oscillators 下载免费PDF全文
Long-wave infrared (IR) generation based on type-II (o→e+o) phase matching ZnGeP2 (ZGP) and CdSe optical parametric oscillators (OPOs) pumped by a 2.05 μm Tm,Ho:GdVO4 laser is reported. The comparisons of the birefringent walk-off effect and the oscillation threshold between ZGP and CdSe OPOs are performed theoretically and experimentally. For the ZGP OPO, up to 419 mW output at 8.04 μm is obtained at the 8 kHz pump pulse repetition frequency (PRF) with a slope efficiency of 7.6%. This ZGP OPO can be continuously tuned from 7.8 to 8.5 μm. For the CdSe OPO, we demonstrate a 64 mW output at 8.9 μm with a single crystal 28 mm in length. 相似文献
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A Stable Diffusion-Bonded Tm:YLF Bulk Laser with High Power Output at a Wavelength of 1889.5 nm 下载免费PDF全文
A high power diode-pumped diffusion-bonded Tm:YLF laser operating at 1889.5nm with a FWHM linewidth of less than 0.1 nm is reported. A Brewster plate and two Fabry-Perot etalons are inserted in the laser cavity for spectral narrowing and stabilization. Under an incident pump power of 136.8 W, 46.1 W of output power is achieved, corresponding to an optical-to-optical conversion efficiency of 33.7% and a slope efficiency of 42.8%. The laser wavelength shift of only 0.07nm with the incident pump power from 20.1 W to 136.8W is observed. The M2 factor at maximum output power is calculated to be 2.3 in the x-axis and 2.0 in the y-axis, respectively. 相似文献
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A 2.09-μm in-band pumped passively Q-switched Ho: YAG laser is demonstrated. Single layer graphene deposited on a quartz substrate is used as the saturable absorber for the Q-switched operation. The minimum pulse width of 2.11μs is obtained at an average output power of lOOmW, corresponding to a pulse repetition frequency of 57.1 kHz and the pulse energy of 1.75 μJ. The beam quality factors M^2 of the Q-switched laser are 1.18 and 1.22 in the horizontal and longitudinal direction, respectively. The optical-to-optical conversion efficiency of the passively Q-switched laser is 4.3%, which is the highest conversion efficiency in the 2 μm wavelength, to the best of our knowledge. It shows clearly that the Ho: YAG crystal is a potential gain medium in the 2 μm range for the graphene application. 相似文献