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动态Cr,Tm,Ho:YAG激光器的实验研究 总被引:4,自引:0,他引:4
本文报道Q开关Cr,Tm,Ho:YAG激光器的实验研究,研究了Cr、Tm、Ho:YAG激光器的调Q工作的一系列特性,并分析了多脉冲产生的机制,获得了单脉冲能量60mJ的2.1μm的稳定调Q激光输出,通过倍频途径测得了茯倍频光的光脉冲半宽度35ns。 相似文献
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利用啁啾脉冲增益饱和放大特性,搭建了一台基于泵浦分束结构的波长可调谐1μm全保偏光纤超短脉冲激光器。该激光器由超短脉冲激光振荡器和超短脉冲激光放大器组成,控制注入到放大器的啁啾脉冲能量,使放大器处于增益饱和或非饱和状态,从而实现激光中心波长的精确调节。实验中,激光器可产生1030.0~1034.5 nm波长可调谐的超短脉冲激光,光谱带宽大于13.1 nm。在整个波长调谐范围内,放大脉冲激光的信噪比均大于55 dB,时域脉宽为7.1~7.5 ps。此外,得益于全保偏光纤架构,该1μm超短脉冲光源表现出良好的长期稳定性,平均功率的相对抖动低至0.1%。该激光器产生的波长可调谐超短脉冲激光,能够精准匹配Yb∶YAG、Yb∶CaF2、Yb∶Lu2O3等晶体的发射峰,可为后续Yb∶YAG、Yb∶CaF2、Yb∶Lu2O3等大能量超短脉冲固体激光器提供紧凑、便捷、稳定的种子光源。 相似文献
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不同放电线路中CuBr激光放电管等离子体动态阻抗特性比较 总被引:1,自引:0,他引:1
基于研制实用化CuBr激光器的目的,利用数值模拟的方法,结合实验数据,讨论了CuBr激光动力学中放电管等离子体参数变化与等离子体阻抗变化的内在联系,给出了CuBr激光管在不同放电电路各参数的表达式,与CuBr激光器动力学模型相结合,得到放电管等离子体阻抗动态演变的结果.得出放电管导通特性在不同放电线路组合中相同的结果,与实验结果完全一致. 相似文献
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为实现封离式CuBr激光器计算机的辅助设计,通过计算机数值计算的方法,利用CuBr激光管外电路放电参数表达式,结合CuBr激光器动力学模型及实验参数,模拟得到了脉冲放电期间激光放电管等离子体放电特性动态变化的规律,得出放电管导通特性与放电线路组合无关的结论,此结论与实验完全一致。 相似文献
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给出了Blumlein放电线路中CuBr激光管放电电路各参数表达式,与CuBr激光器动力学模型相结合,讨论了放电管等离子体阻抗动态变化过程。 相似文献
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Injection seeding. I. Theory 总被引:2,自引:0,他引:2
Injection seeding has proven to be a practical method of controlling the spectral output of a laser in an efficient and reliable manner. To achieve satisfactory injection seeding performance, a sufficiently large seed must be employed. To characterize the required seed, an injection seeding theory is developed here which establishes two interrelated concepts, threshold for injection seeding and spectral purity of the laser output. Rather than utilizing numerical techniques to solve the differential equations, closed-form expressions for the threshold are developed for not only common continuous wave injection seeding but pulsed injection seeding as well. In addition, effects of alignment of the seed to the resonator, both in position and angle, and effects of frequency mismatch, or difference between the seed and the resonant frequencies of the resonator, are taken into account. Expressions for the threshold utilize readily measurable experimental parameters. Spectral purity of the laser output and its consequences on the required seed power or energy are also explored 相似文献
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K. Sasaki O. Takahashi N. Takada M. Nagatsu T. Tsukishima T. Okada S. Okajima Y. Tsunawaki S. Sudo K. N. Sato K. Kondo H. Arimoto K. -I. Sato 《Journal of Infrared, Millimeter and Terahertz Waves》1995,16(12):2133-2146
Spectrally narrow, pulsed outputs consisting of almost a single mode have been obtained from an optically-pumped high-power (200kW) D2O laser by adopting the injection seeding method, where single-mode radiation (seed pulse) from a low-power, compact D2O laser has been injected into the main D2O laser. Spectrally narrow outputs with high power having spectral widths as narrow as 5 MHz have been obtained, when the seed pulses with frequency tuned to one longitudinal mode of the main D2O laser have been injected at a time sufficiently before the lasing of the main laser took place. The experimental results have been compared with those of numerical simulation modified to include the injection field with varying injection times. 相似文献
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A 0.5-GW-peak-power solid-state laser source that is based on injection seeding a Q -switched Nd:Glass laser is discussed. In the first experimental demonstration, a Q -switched oscillator producing 101 mJ was seeded by a train of 11-ps pulses from a CW (continuous-wave) mode-locked laser to produce injection-mode-locked pulses under a 91-ns envelope. A theoretical analysis of injection seeding of a high-gain Q -switched oscillator by the output of a mode-locked oscillator is presented. The numerical analysis predicts the minimum signal power required for injection mode locking and the temporal shape of the output pulse. The experimental results agree well with the theoretical predictions. The amplification demonstrated by this technique is 104.4 dB, which is much greater than that demonstrated by a multipass or regenerative amplifier. The experimental advantages of injection mode locking include greater than 100 dB of effective amplification and noncritical cavity length adjustment of the seed resonator 相似文献