共查询到20条相似文献，搜索用时 46 毫秒
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采用声光调制器（AOM）对脉冲Nd:YAG激光进行腔内调制,提高激光脉冲的峰值功率。获得了脉宽200ns的激光脉冲列,脉冲列的重复频率为5-50kHz,脉冲能量为30－80mJ,最大脉冲峰值功率为400kW,光束质量为3mm mrad。 相似文献
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本文根据速率方程,推导出Q开关Nd:YAG激光器效率与器件参数的关系式.通过合理选择输出镜的反射率可以提高激光器性能.文中还给出了优化调Q激光器效率的简单方法. 相似文献
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计量用脉冲Nd：YAG倍频激光器及其电源 总被引：2，自引：0，他引：2
介绍了脉冲Nd:YAG倍频激光器双波长（1064／532nm）3种输出的激光光路。1064nm输出的动静比可达0.40;KTP晶体外腔倍频效率可达0.50。介绍了稳定可靠的调Q电路、逻辑控制电路和开关电源的主电路及其参数计算。 相似文献
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在对圆棒形ＹＡＧ棒内热效应进行详细分析的基础上，报导了一种闪光灯泵浦、调Ｑ倍频ＹＡＧ激光器。当重复频率为４０Ｈｚ时，１．０６４μｍ最大单脉冲能量为４６２ｍＪ，０．５３２μｍ最大单脉冲能量为２５０ｍＪ；当每秒一次工作时，０．５３２μｍ激光能量为３８０ｍＪ／脉冲，倍频效率大于６９％。 相似文献
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HU Shao-yun ZHONG Ming ZUO Yan FAN Hong-ying 《光电子快报》2006,2(4):278-281
Beamfocusing and higher-order wavefront distortiondue to heat dissipationinalaser gain mediumarei mpor-tant considerationsinthe design of solid-statelasers be-cause wavefront distortion can profoundly influence theperformance of a givenlaser design.Althou… 相似文献
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HU Shao-yun ZHONG Ming ZUO Yan FAN Hong-ying 《光电子快报》2006,2(4):278-281
Beamfocusing and higher-order wavefront distortiondue to heat dissipationinalaser gain mediumarei mpor-tant considerationsinthe design of solid-statelasers be-cause wavefront distortion can profoundly influence theperformance of a givenlaser design.Althou… 相似文献
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LD泵浦Nd：YAG微片激光器的单纵模运转 总被引：1，自引：0，他引：1
继去年我们在国内首先实现了ＬＤ泵浦Ｎｄ：ＹＡＧ微片激光器的室温连续单横模运转之后，最近又观测到了稳定的单纵模输出。当泵浦电流从７００ｍＡ增加到９００ｍＡ，或当上下左右平移微片时，无论是脉冲工作，还是连续运转，均能输出单纵模，波长为１．０６４μｍ且无跳模。 相似文献
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ZOU Jing ZHAO Sheng-zhi YANG Ke-jian LI Gui-qiu SONG Peng 《光电子快报》2005,1(2):113-116
Recently,some feasible ways have been put forwardsto determine the thermal focal lengthfTof gain mediumin end-pumped solid-state laser ,such as CCD-photo-graph[1]and stable cavity condition[2].However ,thismethodinvolves the complicated experi mental setup andcannot be directly applied for high power pump due tothe saturation effect of CCD.Stable cavity conditionmethodis relatively si mple,but since there is no laseroutput when the stable cavity just turns into unstablesome parts of energy o… 相似文献
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Supercontinuum（SC） generation in a dispersion-shifted fiber（DSF） pumped by a 10 GHz regeneratively mode-locked fiber laser（RMLFL） is presented. Optimization of pump wavelength leads to a 20 dB bandwidth of 58.73 nm,which covers the whole C band and part of L band. Using an angle-tuning thin film filter, multi-wavelength and pico-second pulse trains of low chirp could be chosen from the SC spectrum. Amplified spontaneous emission（ASE） induced degeneration of the achieved pulse trains is observed and discussed. 相似文献
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WANG Yun FAN Xiu-wei PENG Qian-qian LIU Jie HE Jing-liang 《光电子快报》2005,1(2):110-112
We have demonstrated a laser-diode pumped Nd.GdVO4 extra-cavity frequency tripling ultraviolet laser with a LBO crystal in this paper. Under the acousto-optic （A-O） Q-switched operation, we have obtained 355 nm ultraviolet laser,with pulse width of 25 ns and pulse repetition rate of 20 kHz. By using a type Ⅰ non-critical phase-matched LBO crystal, the SHG output power of 822 mW is achieved at the incident pump power of 16 W. The output power of 355nm UV laser is 260mW with a type Ⅱ phase-matched LBO crystal,and the conversion efficiency （1 064 nm-355 nm） is 5.9 %. The power stability of 355 nm laser is 1.7% in 1 h. 相似文献
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Inrecentyears,diode pumpedall solid statelasersin blue[1],green[2]andred[3]spectralreginsofintracavity frequencydoublingweredeveloped,becauseoftheirpromisingadvantages,suchasdesignsimplicity,highef ficiency,structurecompactness.Inmedicine,opticaltes ting,andcolordisplaytechnology[4],laserradiationfrom 550nmto650nmisrequired.Inparticular,theyellow laserat588.9nmradiationisveryclosetotheSodium D2atwavelength589nm,thereforeitwillbecomeani dealsourceinsteadofSodiumlamp.Atpresent,thesol id state… 相似文献
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QU Hong-wei GUO Xia DONG Li-min WANG Hong-hang DENG Jun LIAN Peng ZHOU De-shu SHEN Guang-di 《光电子快报》2005,1(1):40-43
The temperature characteristics for the different lasing modes at 300 K of intracavity contacted InGaAs/GaAs Vertical Cavity Surface Emitting Lasers（VCSELs） have been investigated experimentally by using the SV-32 cryostat and LD200205 test system. In combination with the simulation results of the reflective spectrum and the gain peak at different temperatures, the measurement results have been analyzed. In addition, the dependence of device size on temperature characteristics is discussed. The experimental data can be used to optimally design of VCSEL at high or cryogenic temperature. 相似文献
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YANG Ji-min LIU Jie JE Jing-liang 《光电子快报》2005,1(1):44-45
A diode-pumped Nd： YAG acousto-optically（A-O） Q-switched laser at wavelength 946 nm formed with a simple plane-plane cavity has been demonstrated. The maximum average output power was 850 mW. The highest peak power was 531 W with the pulse repetition rate of 20 kHz and pulse width of 80 ns at the incident pump power of 19.5 W. 相似文献
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XIA Wei LI Shu-qiang WANG Ling MA De-ying ZHANG Xin WANG Fu-xun JI Gang LIU Ding-wen REN Zhong-xiang XU Xian-gang MEI Liang-mo 《光电子快报》2006,2(4):263-265
650 nm AIGalnP/GalnP laser diodes with compressively strained MQW active layer have been successfully fabricated by means of single epitaxy growth. The threshold current is 6.4 mA,at 40 mA CW operation, the fundamental transverse-mode still remains, and the output power and the slope efficiency can reach 34 mW and 1.1 mW/mA respectively. The dead output power in CW operation can reach 66 mW at a saturation current of 88 mA. During 200 h burn in test,the laser diodes show good stabilization with a degradation of less than 8 %. 相似文献
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In recent years ,the demand of the project survey grewincreasingly,sothetorsionsensor has obtainedextensiveattention.But the related studies about optical fiber tor-sionsensor are veryfewinthe domestic andforeign[1-3].Inthe traditional torsion sensor we p… 相似文献
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ZHAO Tai-fei YU Hong-fang LI Le-min 《光电子快报》2006,2(6):445-448
Pre-configuration Cycle (p-cycle) is a promising ap-proach for protecting working capacities in WDMnet-works because of its ability to achieve ring-like recoveryspeed while maintaining the capacity efficiency of amesh-restorable network[1].The first and t… 相似文献
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LI Xiao-feng ZHANG Bai-lei LIN Mi QI Li-mei 《光电子快报》2005,1(3):209-212
Thereis cold-heat exchange under the large tempera-ture gradient in the space environment ,andin space-to-ground laser communication links the optical reflectorson a satellite in orbit someti mes need to be placed out-side the capsule.Therefore,tremendous thermal distor-tions will occur onthe optical mirror surface,which maybring shift andspreading ofits reflectedfocus andthere-by influences the performance of space-to-ground lasercommunicationlinks . Although there are many reports on thermal… 相似文献