Controlling Chaos in Semiconductor and Diode-Pumped Solid State Lasers

本研究计划将研究包含腔内非线性元件的固体激光系统的混沌动力学控制。这些激光系统正迅速在光通信和信息处理、材料加工、医学和激光雷达等领域得到重要应用。具体目标包括新的脉冲操作和复杂的周期波形产生的半导体和二极管泵浦固体激光器。这些目标将通过发展适用于混沌系统的控制技术来实现。Ott， Grebogi和Yorke最近开发的控制算法将在激光系统上实现，以获得稳定系统无法产生的特定复杂波形。这将需要新的电子和光学技术来快速反馈和控制激光参数。我们将尝试控制多模激光系统，并开发在复杂周期波形之间切换的技术，例如最近在二极管泵浦固体激光器中展示的反相状态。这些研究不仅应该对新的激光系统和光通信的发展产生影响，而且也应该对化学反应系统和生物系统的控制产生影响。对混沌动力学的统计性质和混沌激光中量子噪声的影响将有一个基本的了解。

This research program will study control of the chaotic dynamics of solid state laser systems that contain intracavity nonlinear elements. These laser systems are rapidly finding important applications in optical communications and information processing, materials processing, medicine and laser radar. Specific goals include novel pulsed operation and complex periodic waveform generation by semiconductor and diode-pumped solid state lasers. These goals will be achieved through the development of control techniques that are applicable to chaotic systems. Control algorithms that have very recently been developed by Ott, Grebogi and Yorke will be implemented on laser systems to obtain specific complex waveforms that cannot be generated by stable systems. This will require novel electronic and optical techniques for fast feedback and control of laser parameters. We will attempt to control multimode laser systems and develop the techniques for switching between complex periodic waveforms, such as the antiphase states demonstrated recently in a diode-pumped solid state laser. Such studies should have an impact not only on the development of new laser systems and optical communications, but on the control of systems of chemical reactions and biological systems as well. A fundamental understanding of the statistical nature of chaotic dynamics and the influence of quantum noise in chaotic lasers will be developed.