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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

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

High-average-power,high-repetition-rate dual signal optical parametric oscillator based on PPMgLN

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Chinese Optics Letters 2010年第5期8卷 505-507页

作者：纪峰卢荣胜李保生张百钢姚建铨 School of Instrument Science and Opto-Electronics Engineering Hefei University of Technology College of Precision Instrument and Opto-Electronics Engineering Tianjin University

A high-average-power,high-repetition-rate dual signal optical parametric oscillator based on periodically poled MgO-doped lithium niobate（PPMgLN） with a phase-reversed grating is *** pump laser is an acousto-optically Q-switched Nd：YVO_4 laser with a maximum average power of 7.6 *** the repetition rate is 50 kHz and the pulse width of the pump source is 23 ns,the maximum average dual signal output power is about 1.9 W,leading to a conversion efficiency of 25%.Over a 30-min interval,the instability of the signal power measured is less than 0.5%.

关键词： Conversion efficiency Lithium Neodymium lasers Niobium compounds Optical frequency conversion Optical parametric oscillators parametric oscillators Pulsed laser applications Pumping (laser) Pumps

Tunable and coherent nanosecond 7.2-12.2 μm mid-infrared generation based on difference frequency mixing in ZnGeP_2 crystal

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Optoelectronics Letters 2010年第3期6卷 179-182页

作者：钟凯李建松徐德刚汪静丽王卓王鹏姚建铨 Institute of Laser and Optoelectronics College of Precision Instrument and Optoelectronic Engineering Key Laboratory of Optoelectronic Information Science and Technology Ministry of EducationTianjin University

A coherent mid-infrared laser source,which can be tuned from 7.2 μm to 12.2 μm based on the type-Ⅰ phase-matched difference frequency generation(DFG) in an uncoated ZnGeP2(ZGP) crystal,is *** two pump waves are from a type-Ⅱ phase-matched dual-wavelength KTP optical parametric oscillator(OPO) of which the signal and idler waves are tuned during 1.85-1.96 μm(extraordinary wave) and 2.5-2.33 μm(ordinary wave),*** maximum energy of the generated mid-infrared laser is 10 μJ at 9.22 μm,corresponding to the peak power of 2.2 kW.

关键词： Infrared devices Infrared lasers Optical frequency conversion parametric oscillators

Theoretical analysis of stimulated polariton scattering from the A_1-symmetry modes of KNbO_3 crystal

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Optoelectronics Letters 2017年第5期13卷 339-343页

作者：李忠洋王孟涛王思磊袁斌徐德刚姚建铨 College of Electric Power North China University of Water Resources and Electric Power College of Precision Instrument and Opto-electronics Engineering Institute of Laser and Optoelectronics Tianjin University

Stimulated polariton scattering(SPS) based on noncollinear phase matching scheme from the A_1-symmetry modes of KNbO_3 crystal is investigated for generating terahertz(THz) wave. Frequency tuning characteristics of THz wave by varying the phase matching angle and pump wavelength are analyzed. The expression of the effective parametric gain length under the noncollinear phase matching condition is deduced. parametric gain and absorption characteristics of THz wave in KNbO_3 are theoretically simulated. The characteristics of KNbO_3 for parametric oscillator(TPO) are compared with those of Mg O:LiNbO_3. The analysis results indicate that KNbO_3 is an excellent optical crystal for TPO to enhance the output of THz wave.

关键词： Band structure parametric oscillators Phase matching Phonons Photons Quantum theory Terahertz waves

Perovskite polariton parametric oscillator

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Advanced Photonics 2021年第5期3卷 36-43页

作者： Jinqi Wu Rui Su Antonio Fieramosca Sanjib Ghosh Jiaxin Zhao Timothy C.H.Liew Qihua Xiong Nanyang Technological University School of Physical and Mathematical SciencesDivision of Physics and Applied PhysicsSingapore MajuLab International Joint Research Unit UMI 3654CNRSUniversite Cote d’AzurSorbonne UniversiteNational University of SingaporeNanyang Technological UniversitySingapore Tsinghua University State Key Laboratory of Low-Dimensional Quantum PhysicsDepartment of PhysicsBeijingChina Beijing Academy of Quantum Information Sciences BeijingChina Tsinghua University Beijing Innovation Center for Future ChipsBeijingChina

Optical parametric oscillators(OPOs)have been widely applied in spectroscopy,squeezed light,and correlated photons,as well as quantum *** OPOs usually suffer from a high power threshold limited by weak high-order nonlinearity in traditional pure photonic ***,polaritonic systems based on hybridized exciton–photon quasi-particles exhibit enhanced optical nonlinearity by dressing photons with excitons,ensuring highly nonlinear operations with low power *** report an on-chip perovskite polariton parametric oscillator with a low *** the resonant excitation at a range of angles,the signal at the ground state is obtained,emerging from the polariton-polariton interactions at room *** results advocate a practical way toward integrated nonlinear polaritonic devices with low thresholds.

关键词： inorganic perovskite semiconductors exciton-polaritons parametric oscillators four-wave mixing

Widely tunable optical parametric oscillator in periodically poled congruently grown lithium tantalite whispering gallery mode resonators

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Chinese Optics Letters 2016年第9期14卷 71-74页

作者：莫其金李世凤刘奕辰蒋旭东赵刚谢臻达吕新杰祝世宁 National Laboratory of Solid State Microstructures Nanjing University

We demonstrate a tunable optical parametric oscillator in a periodically poled congruently grown lithium tantalite whispering gallery mode resonator. The resonator is mechanically polished to millimeter size, and the quality factor is approximately 107 at 1064 nm. Our experiments show that this kind of resonator is capable of reaching a very low threshold and having a wide tuning range. Combined with its narrow resonant linewidth,it is potentially used as a compact, widely tunable, and narrow-linewidth infrared to mid-infrared laser source.

关键词： Optical parametric oscillators Optical resonators Oxide minerals parametric oscillators Resonators