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A Dual-Crystal Cavity Ho,Tm:GdVO4 Laser

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Chinese Physics Letters 2012年第2期29卷 93-94页

作者： ZHU Guo-Li JU You-Lun yao bao-quan WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

We report a 31.2 W cw diode-pumped cryogenic Ho(0.4at.%),Tm(4at.%):GdVO4 laser in a dual-crystal *** pumping sources are two fiber-coupled laser diodes with a fiber core diameter of 0.4 mm,both of which can supply 42W near *** an incident pump power of 70.3W at 802.4nm,a cw output power of 31.2 W at 2.05 μm is attained,corresponding to an optical-to-optical conversion efficiency of 44.4%.The M2 factor is measured as ~1.3 under an output power of 20 W.

关键词： fiber pumped pumping

Actively Q-Switched Laser Performance of Holmium-Doped Lu2SiO5 Crystal

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Chinese Physics Letters 2012年第3期29卷 111-113页

作者： yao bao-quan DUAN Xiao-Ming YU Zheng-Ping WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

We present the actively Q-switched performance of Ho^(3+)in LSO crystal for operation at cryogenic and room *** a cryogenic-temperature Q-switched Tm,Ho:LSO laser,a total incident diode power of 12.1 W is used to generate a maximum pulse energy of 1.15mJ at a pulse repetition frequency(PRF)of 2 kHz(15.8kW peak power).For a room-temperature Q-switched Ho:LSO laser pumped directly by a 1.91-μm Tm:YLF laser,the maximum average output power of 1.75 W and the shortest pulse width of 39ns are achieved at a PRF of 5 kHz when the absorbed pump power is 12.2 W.

关键词： temperature switched pulse

Efficient Tunable Mid-Wave Infrared Laser from 2μm Tm,Ho:YVO_(4)Pumped Gain-Switched Cr^(2+):ZnSe Laser

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Chinese Physics Letters 2011年第5期28卷 140-142页

作者： MENG Pei-Bei yao bao-quan LI Gang JU You-Lun WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

An efficient mid-wave infrared gain-switched Cr^(2+):ZnSe laser pumped by a 2.058μm Tm,Ho:YVO_(4)laser is *** much as 3.86 W output is achieved with the pump power of 13.4 W at puke repetition frequency of 15 kHz,corresponding to the slope efficiency of 30.9%.With a quartz birefringent filter inserted in the laser cavity and by rotating the external angle of the quartz birefringent filter,wavelength tuning range nearly from 2453nm to 2508nm with 5nm linewidth(FWHM)is also obtained.

关键词： ZnSe tuning pumped

High Power Q-Switched Dual-End-Pumped Ho:YAG Laser

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Chinese Physics Letters 2012年第9期29卷 60-62页

作者： DUAN Xiao-Ming SHEN Ying-Jie DAI Tong-Yu yao bao-quan WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

We report the high power acousto-optically Q-switched operation of a dual-end-pumped Ho:YAG laser at room *** the Q-swithched mode,a maximum pulse energy of 2.4 mJ and a minimum pulse width of 23 ns at the repetition rate of 10 kHz are achieved,resulting in a peak power of 104.3 *** beam quality factor of M^(2)~1.5,which is demonstrated by a knife-edge *** addition,the Ho:YAG laser is employed as a pumping source of ZGP optical parametric oscillator,and its total average output power is 13.2 W at 3.9μm and 4.4μm with a slope efficiency of 68.4%.

关键词： temperature. pumped pumping

Room Temperature Diode-Pumped Tunable Single-Frequency Tm:YAG Ceramic Laser

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Chinese Physics Letters 2013年第2期30卷 132-134页

作者： yao bao-quan YU Xiao JU You-Lun LIU Wen-Bin JIANG Ben-Xue PAN Yu-Bo National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001 Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050

A single-longitudinal-mode(SLM)Tm:YAG ceramic laser under room temperature conditions using double Fabry-Pérot etalons is *** maximum single-frequency output power is 318 mW with a slope efficiency of 12.6%.The wavelength tuning range from 2005 nm to 2029 nm is achieved by tuning the obliquity of a 0.1-mm-thick *** single frequency laser has a beam quality of M^(2)=1.3 at the maximum single-frequency output *** result is reported for the first time to the best of our *** SLM Tm:YAG ceramic laser can replace the Tm:YAG single crystal laser to be used as the seed laser for LIDAR laser systems.

关键词： tuning laser ceramic

A Resonantly Pumped Q-Switched Er:Lu_(2)SiO_(5) Laser

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Chinese Physics Letters 2013年第3期30卷 81-83页

作者： yao bao-quan YU Xiao LIU Xiao-Lei DUAN Xiao-Ming JU You-Lun WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

We describe the cw and Q-switched actions of a novel erbium-doped crystal Er:Lu_(2)SiO_(5) pumped by a MgO:PPLN-OPO at 1536 *** efficient 1580.9 nm cw laser with the output power of 608 mW is obtained when the incident power is 4.5 W,corresponding to a slope efficiency of 11.1%.In the Q-switched operation,the pulse energy up to 1.2 mJ is obtained at a repetition rate of 200 Hz.

关键词： switched pumped OPO

Performance of a c-and a-Cut Ho:YAP Laser at Room Temperature

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Chinese Physics Letters 2012年第3期29卷 114-116页

作者： SHEN Ying-Jie yao bao-quan DAI Tong-Yu LI-Gang DUAN Xiao-Ming JU You-Lun WANG Yue-Zhu National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

Continuous-wave operation of room-temperature c-and a-cut Ho:YAP lasers resonantly end-pumped by a diodepumped Tm:YLF laser at 1.91μm are comparatively *** maximum output powers of 7.8 W at 2103nm and 6.09 W at 2130 nm for c-cut Ho:YAP crystal are *** maximum output power of 8.78 W at 2119nm for a-cut Ho:YAlO_(3)crystal is *** maximum slope efficiency in terms of absorbed pump power approximately reaches 57.8%for c-oriented crystal and about 52.7%for a-oriented crystal.

关键词： Tm:YLF pumped pump

Diode-End-Pumped Tm:Ho:GdVO_(4) Microchip Laser at Room Temperature

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Chinese Physics Letters 2011年第2期28卷 119-121页

作者： yao bao-quan CHEN Fang WANG Qiang WU Chun-Ting LI Gang ZHANG Chao-Hui WANG Yue-Zhu JU You-Lun National Key Laboratory of Tunable Laser Technology Harbin Institute of TechnologyHarbin 150001

Room-temperature Tm:Ho:GdVO4 microchip laser operated around 2μm is demonstrated for the first time to our *** a heat sink temperature of 283K,maximum output power of 29.7m W is obtained by using a 0.25-mm-long crystal at an absorbed pump power of 912mW,corresponding to a slope efficiency of 5.0%.At the temperature to 283K,a single-longitudinal-mode laser as much as 8mW at 2048.5 nm is *** M^(2)factor is measured to be 1.4.

关键词： pump 2μm laser

Diode Pumped Operation of Tm,Ho：YVO4 Microchip Laser

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Chinese Physics Letters 2010年第3期27卷 152-154页

作者：李纲姚宝权张朝晖王强王月珠鞠有伦 National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150001

A cryogenic and room-temperature diode pumped Tm,Ho：YVO4 microchip laser with 0.5 mm crystal length lasing around 2μm is demonstrated for the first time to our knowledge. Under cryogenic temperature of 77 K, as much as 1.2 W output and slope efficiency of 35% with respect to absorbed pump power are obtained. At temperature of 5℃ the maximum output power of 48mW is obtained at an absorbed pump power of 503 mW, representing a 9.5% optical to optical conversion efficiency. In addition, as much as 8 mW single-frequency output lasing at 2052.6 nm is achieved at room temperature of 15℃.

关键词： Optics quantum optics and lasers