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C2H2分子受激Raman光谱中的光学Stark效应研究   总被引:3,自引:1,他引:2       下载免费PDF全文
本文研究了C2H2分子受激Raman光谱(SRS)中的光学斯塔克(Stark)效应,同时还研究了激光功率以及单一转动态量子数J与Stark效应关系,实验表明,C2H2分子在高强度激光电场作用下,它的SRS由于光学Stark效应产生明显的非对称加宽,利用Stark线型加宽数值模拟,从理论计算了Raman光谱线型,与实验的SRS线型比较,二者符程度相当好。  相似文献
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1.INTRODUCTIONOpticalacStarkeffect(alsosimplycalledaslightshift),asaninterestingfieldofinvestigationfortestingthefundamentalthe?..  相似文献
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One kind of Bragg-spaced all-optical switching has been proposed in this paper, and the quantum dots ensembles are used in it as active layers. By one-dimensional photonic crystal theory and transmission matrix method, we have studied the reflectivity stop band and switching effect based on the ac Stark effect. The reflectivity stop band of this switch can be suppressed or recovered, and the circular dichroism and birefringence are induced by a circle-polarized control light, which result in a significant polarization switching effect. This switching structure shows great advantages of lower requirement of pump light intensity, larger contrast ratio than that of Bragg-spaced quantum wells with the same period, especially this switching can be used at room temperature theoretically. So we predict that there are prodigious prospects for its using in high speed optical communications as all-optical switching.  相似文献
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Laser-assisted Stark deceleration scheme was proposed to decelerate the high-field-seeking molecule ICl in its rovibronic ground state. However, the laser intensity of 1.0×1010 W/cm2 is hard to realize in experiment. The time-of-flight signals of HC2n+1N (n=2, 3 and 4) by three-dimensional Monte-Carlo simulation suggest that deceleration of such molecules is more feasible experimentally as only one-tenth laser intensity is needed.  相似文献
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