共查询到19条相似文献,搜索用时 62 毫秒
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详细推导了采用色散型布儒斯特扩束器加光栅调谐脉冲钛宝石激光器压窄线宽的原理,纠正了原有理论的错误之处,实验结果和理论结果相吻合。该系统具有较宽的连续调谐范围和较窄的线宽,并获得较高的窄线宽运转的激光效率。 相似文献
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对一种用棱镜作光腔内光束扩展器,用调Q激光抽运的脉冲染料激光器的光谱调谐性能进行了实验研究。实验证明,即使染料溶液不循环,该器件也可以每秒1次的重复率工作,染料激光振荡器的输出谱宽达到0.013埃,调谐范围达到350埃,无腔内F-P标准具时,输出功率约50千瓦。 相似文献
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讨论了最佳扩束棱镜的设计方法,推导了理论上最佳扩束棱镜对两正交分量的透过率的解析表达式。通过对可减小损耗的多棱镜系统进行极值分析,得到了这样一个倍率均分的原则,保证总透过率极大时,总倍率为M的K棱镜系统中所有棱镜的倍率都必须相等且为M~(1/k)。分析还表明,一定折射率的多棱镜系统,在不同倍率范围内存在不同的最优棱镜个数K_(opt)和 相似文献
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<正> 一、引言一个可调谐染料激光器系统已用于普通的局部曝光的光致抗蚀剂薄膜。通过将激光聚焦到薄膜表面和调整入射束的强度来控制曝光斑点的大小。激光器功率和靶在束下的定位都由计算机控制。本文将描述该激光系统和说明怎样用该系统来曝光光致抗蚀剂薄膜。我们也将讨论入射激光功率与曝光斑点大小的关系,并表明该系统达到亚微米范围的能力。 相似文献
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Mandl A. Klimek D.E. Chou H.P. Litzenberger L. Wang Y. 《Quantum Electronics, IEEE Journal of》1995,31(2):346-351
We describe the achievement of single-mode operation of a flashlamp pumped long-pulse, ~700 ns dye laser, with output energy of about 350 mJ using a linear optical cavity with a “twisted mode” configuration. Measurements indicate that the laser frequency chirps by about 40 MHz over the entire pulse. Homodyne measurements indicate that the instantaneous bandwidth is close to the transform limit. This represents a significant advance in dye laser performance 相似文献
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Zhu Lei Qian Liejian Zhang Guiyan Lin Fucheng 《Quantum Electronics, IEEE Journal of》1991,27(2):283-287
It is reported that by mixing the saturable absorber DODCI with the gain medium Rh6G, 30-ps pulses can be generated from a short-cavity dye laser pumped by a copper bromide laser with a 25-ns pulsewidth and a 10-kHz repetition rate. A theoretical analysis of pulse shortening by this method is shown to agree with experimental results. A dispersion-amplifier system was employed for synchronous amplification and frequency tuning of the dye laser. The single-pulse energy was up to 0.15 μJ with a linewidth-of 1.0 cm-1 in a one-stage amplifier, and the amplified spontaneous emission (ASE) background noise was reduced to below 10%. By simply rotating the grating and occasionally adjusting the thickness of the dye cavity slightly, the laser can be tuned continuously from 570 to 590 nm with a nearly Fourier-transform-limited linewidth. The repetition rate can be varied from 10 to 20 kHz 相似文献
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根据由速率方程导出的一组微分-积分方程,研究了闪光灯泵浦染料激光器PTM运转时的能量转移特性。比较了PTM运转和正常运转时能量转移过程的主要区别。给出了转移到受激辐射、非受激辐射、腔损耗、三重态吸收等方面的能量与腔内光子寿命的关系。 相似文献
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Bagnasco G. Cruz C.B. Mataloni P. Romagnoli M. Martini F. 《Quantum Electronics, IEEE Journal of》1983,19(2):202-208
A high-power short pulse (self-injected) version of a two frequency flashlamp pumped dye laser is presented. Stable nanosecond duration pulses are obtained with a gain in output intensity of a factor of 12 with respect to the normal (long pulse) dye laser configuration over the tuning range of Rhodamine6G . The first results of non-linear excitation of surface polaritons in solids with this source are reported. 相似文献
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本文报道一种染料激光,它的泵浦阈值比用氮激光泵浦的染科激光低几十倍,调谐范围大于300A,且光束质量好。该染料激光是采用Rh6G和Coumarine120,并用我们新研制成的轴向放电激励小型XeCl准分子激光泵浦的。文中还对该纵向XeCl准分子激光的某些性能作了介绍。 相似文献
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