Investigation on the frequency stabilization of laser diode

激光二极管稳频研究

• 批准号: 21740299
• 负责人: ZHANG Yun
• 金额: $ 2.83万
• 依托单位: The University of Electro-Communications
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740299/
• 关键词: 半導体レーザー; 周波数安定度; 光フィードバック; フィルタ共振器; 第二高調波

We experimentally demonstrated that the excess phase noise of an external cavity diode laser (ECDL) can be efficiently suppressed by phase-to-amplitude noise conversion and filtered optical feedback techniques. We have observed that the phase noise of an ECDL was suppressed more than 40 dB and reached the shot noise limit from 15MHz using the above-mentioned technique. This opens a new way to reduce the phase noise of diode lasers. We generated second harmonic light using a enhancement cavity. This allows an conversion efficiency of 25% and produces an output power of up to 10 mW at 540 nm.

我们通过实验证明，外部空腔二极管激光器（ECDL）的过量相位噪声可以通过相位到振幅噪声转换和滤波的光学反馈技术有效地抑制。我们已经观察到，通过上述技术，将ECDL的相位噪声抑制了超过40 dB，并达到了15MHz的射击噪声限制。这打开了一种新的方法来减少二极管激光器的相位噪声。我们使用增强腔产生了第二次谐波光。这允许转化效率为25％，并在540 nm处产生高达10 mW的输出功率。

项目成果

Generation of Quasi-CW Deep Ultraviolet Light below 200 nm by Two Successive Cavity Enhanced Second Harmonic Generators

• DOI: 10.1143/jjap.50.042703
• 发表时间: 2011-04
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: Yun Zhang;Nobuyoshi Watanabe;Y. Okada-Shudo;M. Watanabe;M. Hyodo;Xiaoyan Wang;Yong Zhu;Chuangtian Chen;T. Kanai;S. Watanabe