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安光所研制硒镓银晶体实现C02激光倍频
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《长春光学精密机械学院学报(科技信息版)》 1998年第2期23-24,共2页
由中科院安徽光机所承担的“863”计划新材料领域项目中的课题——中远红外非线性光学晶体硒镓银的研制日前取得重要进展。科研人员不仅成功地加工出长10毫米至20毫米的红外倍频元件,而且实现了连续CO2激光倍额。参加鉴定的专家们认为... 由中科院安徽光机所承担的“863”计划新材料领域项目中的课题——中远红外非线性光学晶体硒镓银的研制日前取得重要进展。科研人员不仅成功地加工出长10毫米至20毫米的红外倍频元件,而且实现了连续CO2激光倍额。参加鉴定的专家们认为,该晶体的主要拄术指标已居国内领先水平。 展开更多
关键词 硒镓银晶体 二氧化碳 激光倍频器 红外透光率 吸收系数
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LD Pumped High Efficient Intracavity Frequency-Doubled Green Laser
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作者 陈进 于意仲 +2 位作者 朱孟 王鹏 王杰 《Transactions of Tianjin University》 EI CAS 2003年第1期1-6,共6页
A laser diode (LD) pumped Q switched high efficient intracavity frequency doubled Nd ∶YAG laser is reported here. The authors have designed an optical coupler and pointed out that the key to increasing harmonic conve... A laser diode (LD) pumped Q switched high efficient intracavity frequency doubled Nd ∶YAG laser is reported here. The authors have designed an optical coupler and pointed out that the key to increasing harmonic conversion efficiency is to decrease the loss of fundamental wave. In the experiments, a fundamental mode output laser was acquired. When the pumping power was 12 W, 2.6 W average output power at 1 064 nm with AO Q switch was obtained. 2.1 W average output power at 532 nm was obtained with intracavity frequency doubling, and the highest second harmonic conversion efficiency was 82 0 0. 展开更多
关键词 LD pumped solid state laser high efficient intracavity frequency doubled green laser
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Advances in deep ultraviolet laser based high-resolution photoemission spectroscopy 被引量:2
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作者 Zu-yan XU Shen-jin ZHANG +10 位作者 Xing-jiang ZHOU Feng-feng ZHANG Feng YANG Zhi-min WANG Nan ZONG Guo-dong LIU Lin ZHAO Li YU Chuang-tian CHEN Xiao-yang WANG Qin-jun PENG 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2019年第7期885-914,共30页
We briefly review recent results on photoemission spectroscopy based on the deep and vacuum ultraviolet diode pumped solid-state lasers which we have developed.Cascaded second harmonic generation with the nonlinear cr... We briefly review recent results on photoemission spectroscopy based on the deep and vacuum ultraviolet diode pumped solid-state lasers which we have developed.Cascaded second harmonic generation with the nonlinear crystal KBe2BO3F2(KBBF)is used to generate deep ultraviolet and vacuum ultraviolet laser radiation,which complements traditional incoherent light sources such as gas discharge lamps and synchrotron radiation,and has greatly improved resolution with respect to energy,momentum,and spin of photoemission spectroscopy.Many new functions have been developed with the advantages of high photon energy,narrow linewidth,high photon flux density,and so on.These have led to the observation of various new phenomena and the amassment of new data in the fields of high temperature superconductivity,topological electronics,Fermi semi-metals,and so forth.These laser systems have revived the field of photoemission spectroscopy and provided a new platform in this frontier research field. 展开更多
关键词 Deep and vacuum ultraviolet laser Second harmonic generation KBe2BO3F2 nonlinear crystal Photoelectron spectroscopy
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Sodium guide star laser generation by single-pass frequency doubling in a periodically poled near-stoichiometric LiTaO_3 crystal 被引量:2
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作者 YUAN Ye ZHANG Lei +4 位作者 LIU YanHua Lü XinJie ZHAO Gang FENG Yan ZHU ShiNing 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第1期125-128,共4页
We report in this work a continuous wave(CW) narrowband 589 nm light generation for the purpose of laser guide assisted adaptive optics.A 39 mm long 1 mm thick periodically poled near stoichiometric LiTaO3 crystal wit... We report in this work a continuous wave(CW) narrowband 589 nm light generation for the purpose of laser guide assisted adaptive optics.A 39 mm long 1 mm thick periodically poled near stoichiometric LiTaO3 crystal with duty cycle near 50% was fabricated using electrical poling at room temperature and pumped by a Raman fiber amplifier.We tested two temperature control ovens,and a maximum conversion efficiency of about 14.3%,corresponding to 4 W of yellow light with 28 W of fundamental power,and bandwidth less than 0.18 GHz was achieved. 展开更多
关键词 sodium guide star laser periodically poling stoichiometric LiTaO3 Raman fiber amplifier frequency conversion
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Designing excellent mid-infrared nonlinear optical materials with fluorooxo-functional group of d^0 transition metal oxyfluorides 被引量:7
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作者 Junben Huang Siru Guo +2 位作者 Zhizhong Zhang Zhihua Yang Shilie Pan 《Science China Materials》 SCIE EI CSCD 2019年第12期1798-1806,共9页
Exploration of new infrared(IR) nonlinear optical(NLO) materials is still in urgency owing to the indispensable roles in optoelectronic devices, resource exploration, and long-distance laser communication. The formida... Exploration of new infrared(IR) nonlinear optical(NLO) materials is still in urgency owing to the indispensable roles in optoelectronic devices, resource exploration, and long-distance laser communication. The formidable challenge is to balance the contradiction between wide band gaps and large second harmonic generation(SHG) effects in IR NLO materials. In the present work, we proposed new kinds of NLO active units, d^0 transition metal fluorooxofunctional groups for designing mid-IR NLO materials. By studying a series of d^0 transition metal oxyfluorides(TMOFs),the influences of fluorooxo-functional groups with different d^0 configuration cations on the band gap and SHG responses were explored. The results reveal that the fluorooxo-functional groups with different d^0 configuration cations can enlarge band gaps in mid-IR NLO materials. The first-principles calculations demonstrate that the nine alkali/alkaline earth metals d^0 TMOFs exhibit wide band gaps(all the band gaps >3.0 e V), large birefringence Δn(> 0.07), and two W/Mo TMOFs also exhibit large SHG responses. Moreover, by comparing with other fluorooxo-functional groups, it is found that introducing fluorine into building units is an effective way to enhance optical performance. These d^0 TMOFs with superior fluorooxo-functional groups represent a new exploration family of the mid-IR region, which sheds light on the design of mid-IR NLO materials possessing large band gap. 展开更多
关键词 infrared nonlinear optical materials second harm onicgeneration d^0 transition metal oxyfluorides fluorooxofunctionalgroups
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C-cut Nd-doped vanadate crystal self-Raman laser with narrow Q-switched envelope and high mode-locked repetition rate
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作者 李祚涵 彭继迎 +2 位作者 郑义 杨野 寇晋华 《Optoelectronics Letters》 EI 2014年第6期423-426,共4页
In this paper, a passively Q-switched and mode-locked c-cut Nd-doped vanadate crystal self-Raman laser at 1.17 μm is firstly demonstrated by using Cr4+:YAG. Two crystals of Nd3+:YVO4 and Nd3+:Gd VO4 are adopted to ge... In this paper, a passively Q-switched and mode-locked c-cut Nd-doped vanadate crystal self-Raman laser at 1.17 μm is firstly demonstrated by using Cr4+:YAG. Two crystals of Nd3+:YVO4 and Nd3+:Gd VO4 are adopted to generate laser, respectively. With the incident pump power of 13 W, the average output powers of 678 m W and 852 m W at 1.17 μm are obtained with the durations of Q-switched envelope of 1.8 ns and 2 ns, respectively. The mode-locked repetition rates are as high as 2.3 Hz and 2.2 GHz, respectively. As far as we know, the Q-switched envelope is the narrowest and the mode-locked repetition rate is the highest at present in this field. In addition, yellow laser output is also achieved by using the Li B3O5 frequency doubling crystal. 展开更多
关键词 Frequency doublers Locks (fasteners) Q switching
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