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High－Power Blue Light Generation by External Frequency Doubling of an optical parametric Oscillator ＊

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Chinese Physics Letters 2003年第11期20卷 1957-1959页

作者：毕勇张鸿博孙志培包照日格图李惠清孔宇鹏林学春王桂玲张杰侯玮李瑞宁崔大复许祖彦宋立维章萍崔建峰樊仲维 LaboratoryofopticalPhysics InstituteofPhysicsChineseAcademyofSciencesBeijing100080 BeijignGKLaserTechnologyCo.Ltd. Beijing-1O0085

We report on an all-solid-state high-power quasi-continuous blue light source by the frequency doubling of a signal wave from an optical parametric oscillator (OPO). A 50-mm-long LiB3O5 (LBO) crystal is used for the OPO, which is pumped by a diode-pumped Nd:YAG green laser (10 kHz, 50 ns). Tunable blue emission in a new nonlinear crystal BiB3O6 (BiBO) is obtained with a wavelength range from 450 to 495 nm. The average power of the signal output is as high as 9.3 W from 924 to 970 nm. The maximum output of the blue laser with the second harmonic walk-off compensation is 1.3 W average power at 470 nm for 6.2 W of OPO signal light at 940 nm.

关键词： optical parametric oscillators

Widely continuous-tunable 2.789-4.957 μm twin-MgO:PPLN cascaded optical parametric oscillator

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Chinese Optics Letters 2009年第11期7卷 1038-1040页

作者：夏林中苏红阮双琛 College of Optoelectronic Science and Engineering Huazhong University of Science and Technology Shenzhen Key Laboratory of Laser Engineering Shenzhen University

An all-solid-state mid-infrared optical parametric oscillator with wide tunability by using two identical multi-grating periodically poled 5-mol.-% MgO-doped lithium niobate cascaded is reported. The pump laser is an acousto-optically Q-switched Nd：YAG laser with 150-ns pulse width at repetition rate of 10 kHz. Wide tunability from 2.789 to 4.957μm at the idler wavelength is achieved by varying the temperature from 40 to 200 ~C and translating the grating periods from 26 to 31 μm with a step of 0.5μm. When the incident pump average power is 8.15 W, the maximum idler output average power is 2.23 W at 3.344 μm and the optic-optic conversion efficiency is about 27.4%.

关键词： Conversion efficiency Niobium compounds optical frequency conversion optical parametric oscillators parametric oscillators Pulsed laser applications Pumping (laser) Pumps

Experimental generation of frequency-tunable entangled optical beams with continuous variables

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Chinese Optics Letters 2011年第3期9卷 73-76页

作者：闫智辉商娅娜贾晓军谢常德 State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi University

Frequency tunable continuous variable （CV） entangled optical beams are experimentally demonstrated from a non-degenerate optical parametric oscillator working above the *** measured correlation variances of amplitude and phase quadratures are 3.2 and 1.5 dB,respectively,below the corresponding shot noise level （SNL） in the tuning range of 580 GHz （2.25 nm）.The frequency tuning is realized by simply controlling the temperature of the nonlinear crystal.

关键词： optical parametric oscillators

Tunable, continuous-wave single-resonant optical parametric oscillator with output coupling for resonant wave

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Chinese Physics B 2016年第1期25卷 620-623页

作者：郑雄桦张宝夫焦中兴王彪 The School of Physics and Engineering Sun Yat-sen University

We present a continuous-wave singly-resonant optical parametric oscillator with 1.5% output coupling of the reso- nant signal wave, based on an angle-polished MgO-doped periodically poled lithium niobate （MgO：PPLN）, pumped by a commercial Nd：YVO4 laser at 1064 nm. The output-coupled optical parametric oscillator delivers a maximum total output power of 4.19 W with 42.8% extraction efficiency, across a tuning range of 1717 nm in the near- and mid-infrared region. This indicates improvements of 1.87 W in output power, 19.1% in extraction efficiency and 213 nm in tuning range exten- sion in comparison with the optical parametric oscillator with no output coupling, while at the expense of increasing the oscillation threshold by a factor of - 2. Moreover, it is confirmed that the finite output coupling also contributes to the reduction of the thermal effects in crystal.

关键词： continuous wave frequency conversion optical parametric oscillators output coupling

Continuous-wave,single-frequency intracavity singly resonant optical parametric oscillator at 1.5-μm wavelength

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Chinese Optics Letters 2009年第3期7卷 244-245页

作者：刘建丽李永民刘勤王垚廷张宽收 State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi University

We present a 1.5μm continuous-wave （CW） single-frequency intracavity singly resonant optical parametric oscillator （SRO） based on periodically poled lithium niobate （PPLN）. The SRO is placed inside the ring cavity of a single-frequency 1.06μm Nd：YVO4 laser pumped by a laser diode. The device delivers a maximum single-frequency output power of 310 mW at a resonant signal wavelength of 1.57 μm. The signal wave could be tuned from 1.57 to 1.59 μm by temperature tuning of PPLN crystal over the range of 130 - 170℃.

关键词： Niobium compounds optical parametric oscillators parametric oscillators

A ZnGeP2 optical parametric Oscillator with Mid-IR Output Power 3 W Pumped by a Tm,Ho：GdVO4 Laser

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Chinese Physics Letters 2009年第2期26卷 145-148页

作者：姚宝权朱国利鞠有伦王月珠 National Key Laboratory of Tunable Laser Technology Harbin Institute of Technology Harbin 150080

We report an efficient mid-infrared optical parametric oscillator （OPO） pumped by a pulsed Tm,Ho-codoped GdVO4 laser. The IO-W Tm,Ho：GdVO4 laser pumped by a 801 nm diode produces 20ns pulses with a repetition rate of lO kHz at wavelength of 2.0481μm. The ZnGeP2 （ZGP） OPO produces 15-ns pulses in the spectral regions 3.65-3.8μm and 4.45-4.65μm simultaneously. More than 3 W of mid-IR output power can be generated with a total OPO slope efficiency greater than 58% corresponding to incident 2μm pump power. The diode laser pump to mid-IR optical conversion efficiency is about 12%.

关键词： optical parametric oscillators ZINC compounds GADOLINIUM VANADATES LASERS DIODES

Wildly Tunable, High-Efficiency MgO：PPLN Mid-IR optical parametric Oscillator Pumped by a Yb-Fiber Laser

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Chinese Physics Letters 2014年第2期31卷 55-58页

作者：刘善德王兆伟张百涛何京良侯佳杨克建王瑞华刘训民 State Key Laboratory of Crystal Materials Institute of Crystal Materials Shandong University Ji'nan 250100

We demonstrate a wildly tunable, high-eFficiency mid-infrared （mid-IR） output-coupled single resonant optical parametric oscillator （OC-SRO） pumped by a Yb-fiber laser. The compact mid-infrared source employs a 50- mm-long, multi-grating MgO-doped periodically poled lithium niobate （MgO-PPLN） crystal, providing as much as 1.73 W idler power at 3.012#m, and 1.27W signal power at 1645nm, corresponding to an overall conversion efficiency of 41.7% and a slope efficiency of 77.9%. In particular, the mid-infrared output power of 1.03 W and 0.67W are obtained at 3.7μm and 3.9μm, respectively, with an optical-to-optical conversion efficiency of 14.3% and 9.3%. Furthermore, the idler light is tunable from 3 μm to 3.9 μm by changing the periods from 31 to 28.5μm, with the output power 〉1 W over 78% of the tuning range. Our experimental results are pump power limited and further mid-IR power and conversion efficiency could be obtained with a suitable high-power pump source. The total OC-SRO output power rms at 2.6 W is about 0.6% during 2 h measurement.

关键词： FIBER lasers YTTERBIUM MAGNESIUM compounds optical parametric oscillators ENERGY conversion

Low-Threshold Mid-Infrared optical parametric Oscillator Using Periodically Poled LiNbO33

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Chinese Physics Letters 2004年第1期21卷 98-100页

作者：林学春张瑛孔宇鹏张杰姚爱云侯玮崔大复李瑞宁许祖彦李健 LaboratoryofopticalPhysics InstituteofPhysicsChineseAcademyofSciencesBeijing100080 DepartmentofPhysics ShandongNormalUniversityJinan250014

We report the generation of tunable mid-infrared optical pulses using all-solid-state pumped optical parametric oscillator in a periodically poled lithium niobate. Several ways were used to lower the threshold, resulting in a mean threshold as low as 6.5mW and an achievement of wavelength conversion in the 2.77–4.04μm spectral range. Continuous tuning range from 2.97 to 3.25μm was achieved. The maximum idler output power of 466mW at the wavelength of 3.41μm was obtained, which represents an optical-to-optical conversion efficiency of 19% from incident pump power to the idler output.

关键词： optical parametric oscillators

Wavelength tunability of tandem optical parametric oscillator based on single PPMgOLN crystal

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Chinese Optics Letters 2010年第11期8卷 1061-1063页

作者：魏星斌彭跃峰王卫民陈兴无 Institute of Applied Electronics China Academy of Engineering Physics

The theoretical analysis and experimental results of the wavelength tunability of a tandem optical parametric oscillator （TOPO） based on a single nonlinear crystal are *** is a configuration wherein the signal laser is used as a pump laser to generate secondary optical parametric oscillator （OPO）.The cascaded parametric interactions are achieved synchronously in a single-grating-period MgO doped periodically poled lithium niobate （PPMgOLN）.Tunable multiple-wavelength mid-infrared （mid-IR） lasers are obtained by changing the temperature of the *** the PPMgOLN crystal with a grating period of 31.2 μm is operated at 148 ℃,the dual OPOs generate an identical mid-IR laser of 2.83 μ*** secondary OPO transforms into an optical parametric amplifier,in which different frequency mixing from the signal laser results in the amplification of the idler laser in the first *** is a useful configuration for multiple laser output,broad tuning range,and high-efficiency mid-IR lasers.

关键词： Light amplifiers Lithium Microwave amplifiers Niobium compounds optical parametric oscillators parametric amplifiers parametric oscillators Pumping (laser) Pumps