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Controlling the Group Velocity Based on Nondegenerate Two Wave Coupling Like Mechanism

Author: ZhangWenDing
Tutor: GaoFeng
School: Nankai University
Course: Optics
Keywords: Light group velocity slows down Light group velocity accelerated Ruby crystal Doped R6G PMMA Class nondegenerate two-wave coupling effect
CLC: O437
Type: Master's thesis
Year: 2010
Downloads: 36
Quote: 0
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Abstract


Light group velocity control is a research hotspot in recent years, light group velocity control is actually dispersion control, it will not only help us to understand the properties of the materials, and cache in all-optical, optical delay line, non-line effects enhancement has very broad application prospects. In MS Bigelow and Zhang work right based on our experimental study of self-pumped ruby ??crystal light group velocity slow down and speed up a class of non-degenerate two-wave coupling effect, and take advantage of this effect on the experimental results make a reasonable explanation. On the basis of the light group velocity control work, we speculate that in the presence of a nondegenerate two-wave coupling effect of the medium can take advantage of a class of non-degenerate two-wave coupling effect of the light group velocity regulation. For further experiments, we polymethylmethacrylate (PMMA) doped with Rhodamine 6G (R6G) using the same mechanism in the light group velocity regulation, the main significance of this work are the following two aspects: 1 found ruby crystal cheap alternatives; support earlier on in the presence of non-degenerate two-wave coupling effect of the medium can make use of the class of nondegenerate two-wave coupling effect of the light group velocity control speculation. The main content of the paper include the following four aspects: 1. Chapter we first introduce the basic concepts of the group velocity of light; then do a simple summary of the research status light group velocity control; Finally, the regulation of the light group velocity the significance, highlighting its application in optical buffer, optical delay line, and the enhancement of nonlinear effects. 2 Chapter II we first work of MS Bigelow and Zhang right to do the introduction, on the basis of the above work, the use of improved experimental configuration, in the realization of self-pumped optical group velocity slows down after we ruby crystal further accelerate the self-pumped optical group velocity, this work makes a ruby ??crystal to perfect for the light group velocity control;, in theory, we propose a class of non-degenerate two-wave coupling effect from the pump to explain pump light group velocity accelerated phenomena and experimental proof of the existence of this effect. Since the class nondegenerate two-wave coupling effect nondegenerate two-wave coupling effect of the physical nature of the same, we speculated that in the presence of a nondegenerate two-wave coupling effect of the material can take advantage of a class of non-degenerate two-wave coupling effect of the light group velocity regulation. 3. Third chapter we first analyze the shortcomings of the ruby ??crystal is used to implement the regulation and control of light group velocity and targeted production alternatives of R6G doped PMMA as a ruby ??crystal. To make the analysis of the nature of R6G PMMA doped measurement based on experimental proof of the doped the R6G PMMA-Africa Jane and the presence of two-wave coupling effect, based on the class of non-degenerate two-wave coupling effect in doped R6G PMMA achieve the regulation of self-pumped optical group velocity, and measuring the time delay between the signal light and the reference light to the relationship between the FWHM of the Gaussian pulse signal, these experimental results under certain circumstances, can be used as fully explained doped R6G PMMA ruby crystal excellent alternatives for the light group velocity regulation. The above experimental results and the results of comparative experiments in pure PMMA support in the presence of non-degenerate two-wave coupling effect of the medium can take advantage of the class nondegenerate two-wave coupling effect of the light group velocity control speculation. 4. Fourth stage summary of our work now. The basis of summing up the work, on the one hand, the analysis of the inadequacies of the existing work and looking forward to a class of non-degenerate two-wave coupling effect further research plans; the other hand, based on the entire research direction of the light group velocity control, Outlook The next step in research programs of the light group velocity control work.

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CLC: > Mathematical sciences and chemical > Physics > Optics > Nonlinear optical ( light and matter)
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