Phase Stabilized Laser Diode

相位稳定激光二极管

• 批准号: 9160643
• 负责人: Michael Hercher
• 金额: $ 4.99万
• 依托单位: OPTRA Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9160643&HistoricalAwards=false
• 关键词: Phase; Stabilized; Laser; Diode

We propose to carry out research leading to the development of a stabilized laser diode which can be locked to the frequency of any atomic or molecular absorption line lying within the tuning range of the diode. Water vapor is a particularly convenient source of an abundant number of absorption lines in the spectral region of interest. The unique feature of the proposed stabilization technique is the use of interferometric phase detection of the zero-crossing point of the anomalous dispersion curve at the position of line center. Phase detection has the advantage of being insensitive to intensity fluctuations and to dynamic imbalances between the interfering beams. OPTRA proposes to use a powerful phase measurement algorithm and associated electronic processor, developed for a different application in precision metrology, to sense phase with a precision of better than 0.001 radian-corresponding to a laser diode frequency stability of better than 1 part in 108 for a 10 kHz measurement bandwidth. Our primary motivation in this program is the development of a small, efficient and inexpensive replacement for the gas lasers presently used for precision metrology. Another application of potential commercial value is the generation of stable microwave frequencies with an enormous tuning range (by mixing the outputs from two stabilized lasers).

我们建议进行研究 导致了一个 稳定的激光二极管， 锁定在任何 原子或分子吸收线 位于调谐范围内， 二极管。 水蒸气是一种 特别方便的来源 大量的吸收 光谱区域中的线 兴趣 的独到之处 拟议的稳定化 技术是使用 干涉相位检测 的过零点 异常色散曲线 线中心的位置。 相 检测具有以下优点： 对强度不敏感 波动和动态 干扰之间的不平衡 梁。 OPTRA建议使用一个 强相位测量 算法和相关的电子 处理器，为 不同精度应用 测量，以感测相位， 精度优于0.001 弧度-对应于激光 二极管频率稳定性更好 对于10 kHz，小于1/108 测量带宽 我们的首要 这个计划的动机是 开发一种小型、高效 廉价的替代品， 气体激光器目前用于 精密计量学 另一 潜在的商业应用 价值是稳定的生成 微波频率， 巨大的调谐范围（通过混合 来自两个稳定的 激光器）。