共查询到19条相似文献,搜索用时 109 毫秒
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本文报导了用一台脉冲运转的空心阴极激光器从800.4、825.5和840.4nmAgⅡ跃迁中获得一W 的多谱线输出功率,从408.6nmAgⅡ跃迁中获得350mW 的输出功率。用一台铜空心阴极激光器从780.8nmCuⅡ跃迁中获得一W 连续输出功率。本文也讨论了空心阴极放电的连续波高功率运转的设计考虑。 相似文献
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报道了激光二极管端面抽运的多晶Nd∶YAG(polycrystallineNd∶YAGceramic) 1 0 6 μm连续激光器的实验研究。在抽运功率为 0 3W时 ,激光达到阈值开始输出 ;在抽运功率为 9W时 ,输出功率达到 2W ,激光器光 光转换效率为 2 2 2 %。 相似文献
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报道了一种高功率、高光束质量的755 nm连续波翠绿宝石激光器。首先,对比研究了638 nm激光二极管(LDs)和532 nm固体激光器单端泵浦的翠绿宝石激光器。当638 nm LDs作为泵浦源时,得到的连续输出功率、光-光转换效率分别为3.9 W和19.7%。保持其他条件基本不变,将泵浦源换成532 nm激光器,得到的连续输出功率、光-光转换效率分别为2.1 W和10.0%。结果表明利用 638 nm LDs泵浦翠绿宝石可获得更高的激光功率和转换效率。此外,研究了638 nm LDs双端泵浦的翠绿宝石激光器,在755 nm处得到了6.2 W的连续输出功率,相应的光-光转换效率和斜效率分别为16.3%和24.2%,并且连续输出功率为5.0 W时的光束质量M2优于1.47,这是翠绿宝石激光器在近衍射极限下的最高连续输出功率。这种高功率、高光束质量的755 nm翠绿宝石激光器为连续波紫外激光器的研制提供了良好、稳定的基频源。 相似文献
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报道了激光二极管端面抽运的多晶Nd:YAG(polycrystalline Nd:YAG ceramic)1.06μm连续激光器的实验研究。在抽运功率为0.3W时,激光达到阈值开始输出;在抽运功率为9W时.输出功率达到2W,激光器光-光转换效率为22.2%。 相似文献
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连续工作的体布拉格光栅外腔半导体激光器的温度特性 总被引:4,自引:2,他引:4
对体布拉格光栅(VBG)作为波长选择元件的外腔半导体激光器的波长锁定进行了实验研究,报道了连续运转输出功率达43.5 W的半导体激光器阵列的体布拉格光栅波长锁定实验结果,给出了不同热沉温度下的稳定的波长锁定结果,说明采用体布拉格光栅外腔将减小半导体激光器的温控压力。实验中发现,随着注入电流的增大,输出激光功率逐渐增强,锁定的激射波长向长波长方向偏移。在输出功率为34.5 W时,波长红移约0.56 nm。这一移动与实验测量的体布拉格光栅的温度特性相吻合。连续和高占空比运行、高输出功率情况下,在器件的设计和使用时应该考虑这一效应。 相似文献
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报道了一种适合中小功率输出的全固态激光器的角抽运方法,抽运光从板条激光器中板条晶体的角部入射,可获得较高的抽运效率和较好的抽运均匀性。采用单角抽运方式,进行了角抽运Nd∶YAG复合板条1.1μm多波长连续运转激光器的实验研究。激光腔采用紧凑型平平直腔结构,腔长仅为22 mm。当注入抽运功率为50.3 W时,1.1μm多波长激光连续输出功率最高达10.9 W,光光转换效率为21.7%,斜率效率为22%。当注入抽运功率为48 W时,1.1μm多波长激光连续输出功率短期不稳定性小于0.6%。 相似文献
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激光二极管端面泵浦的多晶Nd:YAG 1.32μm连续激光器 总被引:3,自引:0,他引:3
本文报道了激光二极管端面泵浦的多晶Nd:YAG(Polycrystalline Nd:YAG ceramic)1.32μm连续激光器的实验研究.在泵浦功率为2.1W时,激光达到阈值开始输出;在泵浦功率为9W时,输出功率达到690mW,斜率效率为11%.据我们所知,这是目前报道的功率最大的多晶Nd:YAGl.32μm连续激光器。 相似文献
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研究了螺旋形空心阴极IRCu~+激光器的性能,测量了不同螺旋结构激光器的输出功率.在放电长度1.2m的分段放电管中,在780nm波长时获得最大输出功率为1.3W. 相似文献
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Maiorov M. Menna R. Khalfin V. Milgaso H. Triano A. Garbuzov D. Connolly J. 《Electronics letters》1999,35(8):636-638
218 W quasi-CW output power has been measured from a 1.83 μm InGaAsP/InP 90 element rack and stack configuration array. Despite strong dependence of the device efficiency on temperature, a CW output power of 54 W has been obtained. The maximum efficiency for CW operation was 18% for 30 W CW output power 相似文献
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对Nd:YAG 946 nm和 473 nm激光器特性进行了实验研究。采用二极管端面泵浦平-平腔实验结构,使用键合Nd:YAG晶体作为激光增益介质,在入射泵浦功率31.8 W时,得到最高11 W的连续波946 nm 激光输出,光-光转换效率34.6%,斜率效率35.4%,光束质量M2达到7.53,半小时内功率不稳定度小于0.4%。采用Ⅰ类临界相位匹配LBO晶体对946 nm激光进行内腔倍频,获得了0.887 W的连续波473 nm蓝光输出,光-光换转效率5.87%。实验结果表明:所设计的端面泵浦连续激光器具有很强的实用价值。 相似文献
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Takenaka Y. Kuzumoto M. Yasui K. Yagi S. Tagashira M. 《Quantum Electronics, IEEE Journal of》1991,27(11):2482-2487
A high-power and high-focusing continuous-wave (CW) CO2 laser with a novel unstable resonator was developed. This resonator contains a step-wise variable reflecting output coupler named the phase-unifying output coupler and a total reflector. The laser was excited by a capacitive-barriered AC discharge called a silent discharge. A linearly polarized laser beam with a diffraction-limited divergence angle of 0.55 mrad was obtained. Very stable CW laser operation at an output power of 5 kW was achieved with a threshold discharge power of 10 kW and a slope efficiency of 18% 相似文献
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A transverse gas flow configuration has been developed utilizing RF discharge waveguide technology for several infrared lasers. Two potential applications have been identified: pulsed chemical laser and CW CO2 laser. In the 3.8 μm DF laser, the flowing gas device provides rapid gas replenishment to maintain high electrical efficiency at high repetition rates. An average power of 0.6 W was achieved at 1 kHz. An order of magnitude power improvement can potentially be developed in a closed cycle system. In the CW CO2 laser, the flowing gas provides efficient cooling so that high output power per unit gain length can be achieved. A 16 W output in a 20 cm gain length device, corresponding to a record 0.8 W/cm output has been demonstrated. This system can be developed into a 20-60 W laser with a 20-50 cm gain length. 相似文献
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Kaung-Hsiung Wu 《Quantum Electronics, IEEE Journal of》1987,23(11):1981-1985
This paper describes a TE CW CO2 laser with a special gas flow scheme and an auxiliary discharge configuration. In this laser system, mixed gas was forced to flow through a structure of square tubes with meshes on both sides. An array of auxiliary electrodes was added to produce a dc auxiliary discharge between these electrodes and a tubular cathode. By introducing these structures, uniformity and stability of the main discharge could be significantly improved, and more electrical input power could be deposited into the laser gases at higher pressures and higher discharge currents. An output power exceeding 3000 W/m was obtained at a gas mixture of CO:CO2 :N2 :He = 4:10:25:40 and a total pressure of 7.9 kPa. Without the auxiliary discharge, the maximum output power was less than 1600 W/m, and a stable discharge could not be obtained at a pressure above 4 kPa. The spatial distributions of unsaturated gain along the direction of gas flow and contours with constant gain were also drawn. By introducing molecular sieve 3A, the system could be operated continously over 15 h under sealed-off conditions. 相似文献
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一、前言七十年代初出现了波导CO_2激光器。由于它可以实现频率调谐,在雷达、通讯、测污及光谱学等方面得到广泛应用,而引起人们的极大重视。前期的器件多采用纵向直流激励。因为这种激励方式是一般的连续波CO_2激光器通常所采用的,所以它在工艺上比较成熟,容易实现。但根据放电特性,波导激光器采用它则需要0.5~1.5 kV/cm的高电压及100kΩ/cm的镇流电阻,因此需要考虑采用多段并联放电。这样的放电带来的困难是:各段不易同时着火,要有严格的高压绝缘措施。此外,还有由于镇流电阻耗散大部分功率而使总效率低及由于阴极溅散污染反射镜和放电区而使器件寿命下降等问题。采用横向高频放电,上述一些困难及问题得到克服。放电电压降到100~200V,建立和维持放电都变得比较容易;镇流电阻为零也能稳定地放电, 相似文献