REG: High-Resolution Spectral-and Near-Field-Measurement System

REG：高分辨率光谱和近场测量系统

• 批准号: 9411713
• 负责人: Dan Botez
• 金额: $ 5.39万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9411713&HistoricalAwards=false
• 关键词: REG; Resolution; Spectral; Near; Field

9411713 Botez The Department of Electrical Engineering at the University of Wisconsin, Madison, will purchase high resolution spectral- and laser near-field measurement equipment, which will be dedicated to research. The equipment will be used for several research projects including in particular the development of high-power, single- frequency phase-locked diode-laser arrays. Phase-locked diode-laser arrays have demonstrated high diffraction- limited powers: 1-1.5W. However, the devices do not have a single-frequency output, which prevents their use in many applications. Furthermore, at the present time, their number of elements is limited to 20, which in turn limits the amount of coherent power. The proposed research consists of developing phase-locked antiguided arrays with distributed feedback as well as implementing novel concepts for creating 40-80-element single-spatial-mode arrays. The goals are: single-frequency, diffraction-limited-beam operation to 1W with linewidths 50kHz, and spatially coherent powers of 3W. The requested funds are for purchasing a high-resolution grating spectrometer with a CCD camera as well as a vibrating mirror for spectral near-field imaging of array modes. This will enable the study of the modal structure of novel devices as well as optimization for high-power single-mode operation. ***

9411713博特兹电气工程系在威斯康星州，麦迪逊的大学，将购买高分辨率光谱和激光近场测量设备，这将致力于研究。 该设备将用于几个研究项目，特别是包括高功率，单频锁相二极管激光器阵列的发展。 锁相半导体激光器阵列已经显示出高衍射极限功率：1-1.5W。 然而，这些器件没有单频输出，这妨碍了它们在许多应用中的使用。 此外，目前，它们的元件数量被限制为20，这又限制了相干功率的量。 拟议的研究包括开发具有分布反馈的锁相防空阵列，以及实施创建40-80元单空间模式阵列的新概念。 目标是：单频，衍射限制光束操作到1 W，线宽50 kHz，空间相干功率为3 W。 所要求的资金将用于购买一台高分辨率光栅分光计，该分光计配有一台CCD摄像机以及一个振动镜，用于阵列模式的光谱近场成像。 这将使新器件的模态结构的研究以及高功率单模操作的优化成为可能。 ***