Quantum-Noise Propagation in Long, Traveling-Wave Semiconductor Amplifiers and Superluminescent Sources

长行波半导体放大器和超发光源中的量子噪声传播

• 批准号: 9212996
• 负责人: Michael Raymer
• 金额: $ 24.22万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1996-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212996&HistoricalAwards=false
• 关键词: Quantum; Noise; Propagation; Long; Traveling

The proposed research is a collaborative project between M. Raymer at the University of Oregon and T. Plant at Oregon State University. The new research will address spatial propagation of quantum light fields in traveling-wave semiconductor amplifiers and superluminescent sources. Experiments will be designed to probe questions concerning quantum noise in situations that are not equivalent to cavity lasers, and that will challenge theorists to go beyond the typical photon rate- equation models now being applied to similar problems. The broad goal of the proposed research is to understand from a fundamental viewpoint some of the intrinsic interactions and mechanisms responsible for the quantum fluctuations of devices using semiconductor gain media, and to learn the implications of these fluctuations for amplifier and SLD operation. Traveling-wave amplifiers will be studied which have long (5-10mm) active regions, defined by either a single long contact or multiple (segmented) contacts on a single wafer. By using long amplifier structures attempts will be made to observe the effects of gain saturation and amplitude-to-phase coupling on the optical spectrum and intensity fluctuations of these sources. The studies will also focus on whether saturation of a properly designed amplifier can lead to intensity stabilization of the output of a SLD. The OSU group will provide expertise in fabrication and characterization of semiconductor amplifiers and the UO group will carry out noise measurements and theoretical modeling.

这项拟议中的研究是俄勒冈大学的雷默（M. Raymer）和俄勒冈州立大学的普兰特（T. Plant）的合作项目。这项新研究将解决量子光场在行波半导体放大器和超发光光源中的空间传播问题。实验将被设计来探讨在不等同于腔激光的情况下有关量子噪声的问题，这将挑战理论学家们超越典型的光子速率方程模型，而这些模型目前正应用于类似的问题。所提出的研究的广泛目标是从一个基本的观点来理解一些内在的相互作用和机制，负责使用的设备的量子涨落半导体增益介质，并了解这些波动对放大器和SLD操作的影响。将研究具有长（5-10mm）有源区域的行波放大器，该有源区域由单个长触点或单个晶圆上的多个（分段）触点定义。通过使用长放大器结构，将尝试观察增益饱和和幅相耦合对这些光源的光谱和强度波动的影响。研究还将集中在一个适当设计的放大器的饱和是否会导致SLD输出的强度稳定。俄勒冈州立大学小组将提供半导体放大器的制造和表征方面的专业知识，UO小组将进行噪声测量和理论建模。