Wavelength Stabilization of a Semiconductor laser in High-Speed Modulation Using Saturated Absorption Spectroscopy of Atomic Lines

使用原子线饱和吸收光谱进行高速调制中半导体激光器的波长稳定

• 批准号: 02805038
• 负责人: SHIMBA Minoru
• 金额: $ 1.28万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02805038/
• 关键词: Semiconductor Laser; Wavelength Stabilization; High Speed Modulation; FSK Modulation; Saturated Absorption Spectroscopy; 矩形周波数変調; 吸収分光

We stabilized the oscillation frequency of a semiconductor laser at 800 nm wavelength region under direct frequency shift keying (FSK) using the Rb absorption lines in this year. We also measured the frequency deviation from the reference frequency. The better stability had already been observed in the peak-hold method under some different FSK conditions, i. e., some different frequency shifts and duty ratios, in comparison with the traditional method of the unmodulated case. The direct rectangular weve modulation does not give the complete FSK modulation because of the thermal effect at a semiconductor laser direct frequency modulation. We devised two simple circuits and obtained the modulation close to the complete FSK modulation. This modulation provided the better stability and the less frequency deviation. We also investigated the method using the saturated absorption spectroscopy of atomic lines for the stabilization and obtained more than one digit better stability in this year. We will investigate the oscillation frequency stabilization of the semiconductor laser at the higher modulation frequency and at the wavelength of 1.55 mum by using the peak-hold method.

本文利用铷吸收谱线稳定了半导体激光器在直接频移键控（FSK）下800 nm波长区域的振荡频率。我们还测量了频率与参考频率的偏差。在不同的频移和占空比条件下，与传统的无调制情况下的方法相比，峰值保持方法在不同的频移和占空比条件下具有更好的稳定性。在半导体激光直接调频中，由于热效应的影响，直接矩形微波调制不能实现完全的FSK调制。我们设计了两个简单的电路，并获得了接近完全FSK调制的调制。该调制具有较好的稳定性和较小的频率偏差。我们还研究了利用原子线饱和吸收光谱稳定化的方法，并在今年获得了一个多位数的更好的稳定性。我们将用峰值保持法研究半导体激光器在较高调制频率和1.55 μ m波长下的振荡稳频特性。

项目成果

Yasuhiro Nihei, Yoshihisa Kobayashi, Masakazu Takahashi, Takahashi Sato, and Minoru Shimba: "'Frequency Stability and Frequency Accuracy of a Semiconductor Laser under Direct Modulation'" IEICE Technical Report. OQE91-19.(1991)

Yasuhiro Nihei、Yoshihisa Kobayashi、Masakazu Takahashi、Takahashi Sato 和 Minoru Shimba：“‘直接调制下半导体激光器的频率稳定性和频率精度’”IEICE 技术报告。

Takao Nakazawa, Takashi Ueno, Takashi Sato, and Minoru Shimba: "'Shift of the Stabilized Frequency Points in the Frequency Stabilization of a Semiconductor Laser by Using the Faraday Effect" Shin-Etsu Shibu Conference of IEICE. Paper No. 171.(1991)

Takao Nakazawa、Takashi Ueno、Takashi Sato 和 Minoru Shimba：“利用法拉第效应实现半导体激光器频率稳定中的稳定频率点的移动”IEICE 的 Shin-Etsu Shibu 会议。

上野 隆: "ファラデ-効果を用いた飽和吸収分光信号による半導体レ-ザの周波数安定化" 電子情報通信学会光・量子エレトロニクス研究会 OQE91ー2. 7-12 (1991)

Takashi Ueno：“利用法拉第效应利用饱和吸收光谱信号实现半导体激光器的频率稳定”IEICE 光学和量子电子研究组 OQE91-2 (1991)。

上野 隆: "ファラデ-効果を用いた飽和吸収分光信号による半導体レ-ザの周波数安定化" 電子情報通信学会光・量子エレクトロニクス研究会 OQE91ー2. 7-12 (1991)

Takashi Ueno：“利用法拉第效应利用饱和吸收光谱信号实现半导体激光器的频率稳定”IEICE 光学和量子电子研究组 OQE91-2 (1991)。

Hitoshi Rikukawa, Takashi Sato, Masahiro Nakagawa, and Minoru Shimba: "'Frequency Stability of a Semiconductor Laser Using the Faraday Effect'" Trans. IEICE. J74-CI. 176-183 (1991)

Hitoshi Rikukawa、Takashi Sato、Masahiro Nakakawa 和 Minoru Shimba：“‘利用法拉第效应的半导体激光器的频率稳定性’”Trans。