共查询到19条相似文献,搜索用时 68 毫秒
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高功率光纤激光器相干合成研究 总被引:5,自引:3,他引:5
综述了国内外在高功率光纤激光器相干合成方面的最新进展,分析了各种方案的优缺点,并展望了光纤激光器相干合成的应用前景。国外已研发了19芯阵列光纤,进行了10路光纤激光器相干合成,输出功率已达200W。国内进行了两束光纤激光的相干组束,获得了连续波18.3W的光纤激光输出,并在高速相位探测与锁定方面取得了一定进展。 相似文献
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光纤激光器光束的叠加技术 总被引:21,自引:4,他引:21
建立高功率、高亮度激光系统的一个重要方法是使用激光阵列,一方面要增大单个阵元的输出功率,另一方面要对阵列进行精确的控制,使各激光光束能有效地叠加.详细讨论了光纤激光光束叠加的主要技术途径,其中包括相干叠加和非相干叠加技术,并对有关技术问题进行分析. 相似文献
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Coherent combining of Q-switched fibre lasers 总被引:5,自引:0,他引:5
Sabourdy D. Desfarges-Berthelemot A. Kermene V. Barthelemy A. 《Electronics letters》2004,40(20):1254-1255
The power rising of an actively Q-switched erbium-doped fibre laser by using two coupled cavities with amplifying fibres in an interferometer configuration is reported. This study shows that the pulse peak power obtained is 1.7 higher than in a case of a unique laser. This concept brings some novel perspectives for scaling the output peak power of singlemode Q-switched fibre lasers. 相似文献
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A scalable architecture for coherent combining of pulsed fibre lasers is reported. Stable synchronous and phase-locked pulsed fibre laser beams are generated in a phase modulated mutually coupled fibre laser array. The mechanism for generating a pulsed laser is different from previous Q-switching, modelocking or pump modulation methods. Two pulsed fibre lasers are coherently combined with 0.48 J pulse energy at the repetition rate of 115 kHz. The repetition rate can be controlled by adjusting the pump current. The combining efficiency of the two pulsed fibre lasers reaches 90 and the fringe contrast is larger than 40 . 相似文献
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锥形吸收腔高能量激光能量计测量过程中的后向散射能量分布是影响测量准确度的一个关键参量.依据锥形腔能量计内表面与入射激光相互作用的光学定律,推导了能量计内入射激光光束能量的分布函数;并结合复化辛普森数值计算方法,计算分析了当能量计反射系数一定,而入射激光光束直径与吸收腔直径之比不同时,锥形吸收腔开口处光功率密度分布和后向散射总功率.计算结果表明,对于大口径高能量激光,后向散射能量损失将达到0.5%至2.5%左右.根据后向散射光功率密度分布计算得到后向散射总能量,对测量结果进行修正,将有效改善高能量激光能量测量准确度. 相似文献
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The presence of mode-partition noise in an erbium-doped fibre laser has been experimentally demonstrated. A numerical model has been developed using the Langevin rate equations. Its predictions are in qualitative agreement with the experimental data 相似文献
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Neodymium-doped silica single-mode fibre lasers 总被引:1,自引:0,他引:1
We report the first CW operation of a neodymium-doped silica single-mode fibre laser pumped by a GaAIAs laser diode. A laser threshold of less than 1 mW has been obtained. 相似文献
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文中提出了利用受抑全内反射(FTIR)开关,综合种子注入和腔倒空技术来实现高能长脉冲准分子激光脉冲宽度压缩的设想.分析了FTIR开关在应用中需要解决的关键问题.同时讨论了注入种子技术中使用非稳腔结构提取最大能量和获得高光束质量需要考虑的一般性问题. 相似文献