毕业论文：《微腔光振荡特性的研究》.docVIP

摘要 近年来，光学微腔以其高品质因数和低模式体积而受到日益广泛的研究和应用，在许多场合具有很好的应用前景，例如非线性光学，腔体量子电动力学，极低阀值微腔激光器等。本文主要研究了柱形微腔的光学特性。首先，研究了微腔的内场分布，并利用数值计算方法模拟出了非谐振和结构共振两种情形下的内场分布情况，分析了微腔内的光振荡特性。其次，根据洛伦兹-米氏理论研究了柱形微腔外部弹性散射场的分布特性，并给出了数值模拟结果。接下来，研究微腔中非弹性散射场即受激拉曼散射，并就一种具体的柱形微腔（光纤）进行了数值模拟，对模拟结果进行了详尽的讨论，还研究了其与MDR之间的关系。同时实验测量了光纤内芯的拉曼光谱，并对其进行了分析。最后，介绍了微腔的一个重要应用方向——微腔激光器，择其典型——随机激光器进行了研究，通过对随机介质（ZnO）发射光谱的实验测量，研究了随机介质中激光的形成过程，并介绍了一种随机激光器理论。 关键词：微腔 结构共振 拉曼散射 随机激光器 Abstract In recent years, optical microcavity with its high-quality factor and low mode volume have received increased research and application. There is good foreground in many areas, for example nonlinear optics, the cavity quantum electrodynamics(CQED), microlaser with very low threshold, et al. The cylinder microcavity was mainly studied in this paper . First, the internal field of the microcavity was given , a numerical method was also provided to stimulate the internal field at the conditions of nonresonance and morphology-dependent resonance(MDR),in addition, the characteristic of optical oscillation in the microcavity was analyzed .Second, based on the Lorenz-Mie theories, the elastic scattering field of the cylinder microcavity was shown ,and also a numerical results was given. Then, the Raman scattering in optical fibers and its relation with MDR in optical fibers were discussed . As the size parameter of the fiber is comparable with the wavelength of the pump laser , it can be treated as a microcavity. Then the Raman scattering in optical fibers was measured by experiment and the result was analyzed . In the end, microcavity lasers , an important application of the microcavity, was briefly introduced. The random laser is just a typical microcavity laser. By the mearsurement on the emission spectrum of active random medium(ZnO), the formation process of lasing was described , finally the theories about random laser was given . Keywords: Microcavity MDR Raman Scattering Random Laser 目录 TOC \o 1-2 \h \z \u 第一章 绪论 h 1 §1.1 引言 h 1 §1