赫兹线宽光学频率合成器研究

项目名称： 赫兹线宽光学频率合成器研究

项目编号： No.11334002

项目类型： 重点项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 马龙生

作者单位： 华东师范大学

项目金额： 325万元

中文摘要： 目前的频率合成器已很成熟，它可覆盖音频到微波频段，已在高科技、科学研究和日常生活中得到了广泛应用。光谱学家也长期梦想在光学波段建立频率合成器，可在宽调谐波长范围内，根据精密光谱和精密测量的需要，高精度地在所需要的频率处产生激光输出。该课题将在已研制成的亚赫兹线宽稳频激光和飞秒激光光梳的基础上，进一步将亚赫兹线宽稳频激光的频率稳定性和相干性高保真地传递到单频可调谐钛宝石激光，重点研究窄线宽光学频率合成器的关键技术。研究团队将在730-970 nm波长范围，实现激光线宽为1 Hz和频率稳定性为1E-15的光学频率合成器，为开拓光学频率合成器研究新领域做贡献。

中文关键词： 光学频率综合发生器;光学频率梳;窄线宽激光;频率稳定度;

英文摘要： Frequency synthesizers from audio frequency to the microwave region are widely used in both high-technology scientific research and daily life. Spectroscopists have been long-dreaming of such kind of frequency synthesizers in the optical domain, which can generate optical light with high precision at any moment and at any wavelength over a wide range according to the requirement of precision spectroscopy and measurement. Based on the developments of narrow-linewidth lasers with high frequency stability and a femtosecond laser optical frequency comb in our group, in this proposal we will precisely transfer the frequency stability and high coherece of the narrow-linewidth lasers to a frequency-tunable, single frequency Ti:sapphire laser via the optical frequency comb. We will explore the key techniques of narrow-linewidth optical frequency synthesizer. The goal of this proposal is to develop an optical frequency synthesizer from 730 nm to 970 nm with a linewidth of 1 Hz and frequency stability of 1E-15. It will open entirely new fields in optics with this optical frequency synthesizer.

英文关键词： optical frequency synthesizer;optical frequency comb;narrow linewidth laser;frequency stability