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	High-sensitivity methane monitoring based on quasi-fundamental mode matched continuous-wave cavity ring-down spectroscopy 期刊论文 OAI收割 CHINESE PHYSICS B, 2022, 卷号: 31 作者: Li, Zhe; Yang, Shuang; Zhang, Zhirong; Xia, Hua; Pang, Tao \| 收藏 \| 浏览/下载：59/0 \| 提交时间：2022/12/22 continuous-wave cavity ring-down spectroscopy (CW-CRDS) cavity modes coupling efficiency mode matching greenhouse gas
	Experimental proof test of CW mode RF modulated grid-controlled thermionic electron gun 期刊论文 OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2022, 卷号: 1021, 页码: 5 作者: Zong, Yang; Cao, Shuchun; Zhao, Quantang; Ran, Zhaohui; Zhou, Youwei \| 收藏 \| 浏览/下载：51/0 \| 提交时间：2022/01/07 Electron gun Grid controlled RF modulator CW mode
	BXERL photo-injector based on a 217 MHz normal conducting RF gun 期刊论文 OAI收割中国物理C, 2011, 期号: 9, 页码: 865-869 作者: Liu SG(刘圣广); Huang TM(黄彤明); Xu JQ(徐金强) 收藏 \| 浏览/下载：26/0 \| 提交时间：2015/12/14 ERL normal conducting RF gun photo-injector CW mode
	Continuous-wave and passively mode-locked Yb : GYSO lasers pumped by diode lasers 期刊论文 OAI收割 ieee j. quantum electron., 2008, 卷号: 44, 期号: 5～6, 页码: 567, 572 Li Wenxue; Hao Qiang; Ding Liang'en; 赵广军; 郑丽和; 徐军; 曾和平收藏 \| 浏览/下载：802/197 \| 提交时间：2009/09/24 continuous-wave (CW) lasers mode-locked lasers yttrium lasers
	High power vertical cavity surface-emitting laser with high reliability (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China Changling Y.; Guoguang L.; Chunfeng H.; Li Q. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 High-power vertical-cavity surface-emitting lasers with InGaAs/GaAs quantum well active gain region are investigated. By using AlAs oxidation technology the devices have been fabricated in experiment and the characteristics of the device are carried out at room temperature. The 300m-diameter VCSELs have the maximum room temperature continuous wave (CW) optical output power of about 1.1W and the threshold current of the device is about 0.46A. The life test of the device is carried out in constant current mode. The life test of 300-m diameter lasers shows that the average lifetime is about 1800h at 80C. The device degradation mechanism is also discussed in detail.
	High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China 作者: Zhang Y.; Liu Y.; Liu Y.; Liu Y.; Qin L. 收藏 \| 浏览/下载：33/0 \| 提交时间：2013/03/25 High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
	Characterization of diode-pumped laser operation of a novel Yb : GSO crystal 期刊论文 OAI收割 ieee j. quantum electron., 2006, 卷号: 42, 期号: 5-6, 页码: 517, 521 Xue YH; Wang CY; Liu QW; Li YF; Chai L; 严成锋; 赵广军; 苏良碧; 徐晓东; Xu J 收藏 \| 浏览/下载：1426/277 \| 提交时间：2009/09/24 continuous-wave (CW) mode locking diode-pumped lasers Q-switched mode locking Yb : GSO crystal
	All-solid-stated laser controller design based on digital optical feedback (EI CONFERENCE) 会议论文 OAI收割 Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004, Beijing, China 作者: Liu L.; Wang J.-L.; Wang J.-L.; Liu L. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 The new design about a CW digital all-solid-stated LD pumped Nd:YVO 4 controller is introduced. The stable output power of this digital laser controller which adopts Digital Signal Processor(TMS320C31) is approximately 20mW. The whole system is composed of constant- current source protection circuit pulse-width modulation circuit Si-photo-detector and amplified circuit and Digital Signal Processor control system etc. In terms of error deviation Based on nonlinear control curves of LD power output by Si-photo-detector the region control can be obtained by means of the PID control algorithm in the software platform that is error amendment and high stability laser power output can be achieved. And the precision of temperature control can reduce from 0.2C to 0.04C. By adopted integral separated mode PID control algorithm the LD output power instability ( %) down to 2%. By way of adopting the new digital design the work to protect the laser diode including the continuous adjustable output power with high accuracy and stability is easily obtained. The internal-external modulation control of the laser power based on digital optical feedback can be accomplished with stable power output. At last the bringing reasons of noise are analyzed and the solving methods are put forward in this paper.
	Research on LD-Pumped dual wavelength Nd:YAG Laser with high beam quality for machining (EI CONFERENCE) 会议论文 OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者: Zhang G.; Zhang G.; Zhang G.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 Considering laser medium thermal lens effect and thermal focal length changes with pumping power conventionally lasers are designed to operate in the middle of thermal stable zones where the fundamental mode size is insensitive to thermal perturbation while this method seems impossible when large fundamental mode size is required. Through self-select mode cavity lasers are designed to work at the border of stable zone instead where large fundamental mode size in gain media can be reached. With increase of pumping power and self-aperture mode-selective effect mode size would grow up automatically to a certain value suitable for monomode resonance. With double 180 W pump modules acoustic Q-switch and LBO external frequency-doubled over 28 W which M2 equals 4.5 quasi-CW output green laser and 52W 1.064 um IR output is obtained simultaneity. With the insertion or not of the harmonic separator by footswitch high beam quality green IR and green IR lasers are obtained conveniently.