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	Laser pulse coded signal frequency measuring device based on DSP and CPLD (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, May 24, 2011 - May 26, 2011, Beijing, China 作者: Zhang H.-B.; Wang T.-F.; Guo R.-H.; Li Y.; Li Y. 收藏 \| 浏览/下载：38/0 \| 提交时间：2013/03/25 Laser pulse code is an anti-jamming measures used in semi-active laser guided weapons. On account of the laser-guided signals adopting pulse coding mode and the weak signal processing it need complex calculations in the frequency measurement process according to the laser pulse code signal time correlation to meet the request in optoelectronic countermeasures in semi-active laser guided weapons. To ensure accurately completing frequency measurement in a short time it needed to carry out self-related process with the pulse arrival time series composed of pulse arrival time calculate the signal repetition period and then identify the letter type to achieve signal decoding from determining the time value number and rank number in a signal cycle by Using CPLD and DSP for signal processing chip designing a laser-guided signal frequency measurement in the pulse frequency measurement device improving the signal processing capability through the appropriate software algorithms. In this article we introduced the principle of frequency measurement of the device described the hardware components of the device the system works and software analyzed the impact of some system factors on the accuracy of the measurement. The experimental results indicated that this system improve the accuracy of the measurement under the premise of volume real-time anti-interference low power of the laser pulse frequency measuring device. The practicality of the design reliability has been demonstrated from the experimental point of view.
	808nm high-power semiconductor laser therapeutic apparatus based on LPC2138 (EI CONFERENCE) 会议论文 OAI收割 2011 IEEE International conference on Intelligent Computation and Bio-Medical Instrumentation, ICBMI 2011, December 14, 2011 - December 17, 2011, Wuhan, Hubei, China 作者: Wang B.; Wang B. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 In this paper we designed an intelligent 808nm high-power semiconductor laser therapeutic apparatus with the LPC2138 ARM processor. The laser is driven by the digital constant current source module and the apparatus has good human-machine interaction performance on account of set the parameters intelligently. The function such as operation mode output power output pulse width and pulse cycle could be easily set through the TFT touch screen. The application software could transmission the log data to the computer by the USB interface in order to check and study the records later. 2011 IEEE.
	Filamentation control in the temperature gradient argon gas 期刊论文 OAI收割 appl. phys. b-lasers opt., 2009, 卷号: 94, 期号: 2, 页码: 265, 271 Cao S. -Y.; Kong W. -P.; Wang Z.; Song Z. -M.; Qin Y.; Li R. -X.; Wang Q. -Y.; Zhang Z. -G. 收藏 \| 浏览/下载：1047/70 \| 提交时间：2009/09/18 FEMTOSECOND PULSE-PROPAGATION PUMPED HOLLOW-FIBER CYCLE LASER-PULSES MULTIPLE FILAMENTATION SELF-COMPRESSION 1 KHZ GENERATION PRESSURE INTENSE AIR
	High power 1064nm laser diode array and measuring chip temperature based on emitting spectra (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China 作者: Wang X.; Wang L.; Wang L.; Wang L.; Wang Y. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 High power laser diode array with an emission wavelength of 1064nm is presented. The epitaxial structure is an InGaAs/GaAsP strained-compensated single-quantum well structure. The modules CW output power can reach to 56.5W at current of 80A. Because the heat capacity of st rather shorter pulse duration and lower duty cycle the average driving power in the laser chip is quite low so the heating effect cemiconductor laser is very small using pulse injection can reduce temperature rising significantly. Aould be neglected. The definite relation between lasing wavelength and chip temperature is developed. The temperature drift coefficient is 0. 45nm/K 2008 SPIE.
	Optimization of multi-cycle two-color laser fields for the generation of an isolated attosecond pulse 期刊论文 OAI收割 opt. express, 2008, 卷号: 16, 期号: 14, 页码: 10331, 10340 Kim Byunghoon; Ahn Jungkwen; Yu Yongli; 程亚; 徐至展; Kim Dong Eon 收藏 \| 浏览/下载：1093/55 \| 提交时间：2009/09/18 America Attosecond pulses Full Width Half Maximum (FWHM) FWHM pulse Main color Mixing ratios Multi-cycle Optical (PET) (OPET) Optimal wavelength Pulse duration (PD) Shorter wavelengths Two color laser fields Two-color Two-dimensional (2D) map
	Accurate determination of the absolute phase and temporal-pulse phase of few-cycle laser pulses 期刊论文 OAI收割 chin. phys., 2007, 卷号: 16, 期号: 2, 页码: 472, 477 Xia Ke-Yu; 龚尚庆; 钮月萍; 李儒新; 徐至展收藏 \| 浏览/下载：1138/85 \| 提交时间：2009/09/18 absolute phase temporal-pulse phase few-cycle laser pulse Fourier analysis
	Enhancement of ultrafast four-wave mixing in a polar molecule medium 期刊论文 OAI收割 opt. express, 2006, 卷号: 14, 期号: 16, 页码: 7216, 7223 Yang Weifeng; 龚尚庆; 徐至展收藏 \| 浏览/下载：1031/85 \| 提交时间：2009/09/18 PERMANENT DIPOLE-MOMENTS CARRIER-ENVELOPE PHASE CYCLE LASER-PULSE HARMONIC-GENERATION 2ND-HARMONIC GENERATION ABSORPTION DYNAMICS LIGHT
	The room-temperature lasing of microdisk lasers (EI CONFERENCE) 会议论文 OAI收割 Optoelectronics, Materials, and Devices for Communications, November 12, 2001 - November 15, 2001, Beijing, China 作者: Lin J.; Wang L.; Wang L.; Wang L.; Liu Y. 收藏 \| 浏览/下载：41/0 \| 提交时间：2013/03/25 Multiple quantum wells (MQW) microdisk lasers are fabricated by using the methods of photolithography-etching techniques. By the CCD watching-control and micron-area detecting systems the 5m-diameter microdisk lasers was optically pumped by Ar+ pulse laser at room temperature with the 1:50 pump duty cycle. We obtained the single-mode lasing at 1.543m wavelength with threshold pump power about 200w.