Search for the blue-detuned magic wavelength for the ytterbium optical lattice clock

寻找镱光学晶格钟的蓝色失谐魔波长

• 批准号: 23540472
• 负责人: YASUDA Masami
• 金额: $ 3.41万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540472/
• 关键词: 光格子時計; イッテルビウム; 絶対周波数計測; 光周波数コム; 青方離調魔法波長; 光コム

In order to reduce the uncertainty of the ytterbium (Yb) optical lattice clock due to the optical lattice laser, we tried to search for the blue-detuned magic wavelength of Yb and obtained the following results; 1: We have succeeded in improving our Yb optical lattice clock, reducing the uncertainty to 1/10 of that of our 2009 measurement, which led to the adaption of the Yb optical lattice clock as one of the secondary representation of the second. 2: We have succeeded in measuring the frequency ratio of the Yb and Sr optical lattice clocks by directly comparing the optical frequencies by an optical frequency comb, which allows us to measure the light shift frequency with ten times smaller integration time compared to the measurement with a microwave frequency standard. 3: We have developed a blue laser source for inducing the light shift to the clock transition of Yb. We have obtained the 100 mW of 399 nm laser by a second harmonic generation of the amplified infrared laser diode.

为了减少镱（Yb）光学晶格钟因光学晶格激光器带来的不确定性，我们尝试寻找Yb的蓝失谐魔波长，并得到以下结果； 1：我们成功改进了 Yb 光学晶格钟，将不确定性降低到 2009 年测量的 1/10，这导致 Yb 光学晶格钟被采用作为秒的辅助表示之一。图2：我们通过光学频率梳直接比较光学频率，成功测量了Yb和Sr光学晶格时钟的频率比，这使得我们能够以比使用光频梳测量小十倍的积分时间来测量光移频率。微波频率标准。图 3：我们开发了一种蓝色激光源，用于诱导 Yb 时钟跃迁的光移。我们通过放大红外激光二极管的二次谐波产生了 100 mW 的 399 nm 激光。

项目成果

Frequency ratio measurement of 171Yb and 87Sr optical lattice clocks

171Yb和87Sr光晶格钟的频率比测量

• 发表时间: 2014
• 期刊: Optics Express
• 影响因子: 3.8
• 作者: Daisuke Akamatsu;Masami Yasuda;Hajime Inaba;Kazumoto Hosaka;Takehiko Tanabe;Atsushi Onae;Feng-Lei Hong
• 通讯作者: Feng-Lei Hong

秒の再定義に向けたイッテルビウム光格子時計の絶対周波数測定

镱光学晶格钟绝对频率测量重新定义秒

• 发表时间: 2013
• 作者: 安田正美;稲場肇;河野託也;田邊健彦;中嶋善晶;保坂一元;赤松大輔;大苗敦;鈴山智也;雨宮正樹;洪鋒雷
• 通讯作者: 洪鋒雷

Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards the Secondary Representation of the Second

改进 171Yb 光晶格时钟的绝对频率测量，实现秒的二次表示

• 发表时间: 2012
• 作者: Masami Yasuda;Hajime Inaba;Takuya Kohno;Takehiko Tanabe;Yoshiaki Nakajima;Kazumoto Hosaka;Daisuke Akamatsu;Atsushi Onae;Tomonari Suzuyama;Masaki Amemiya;Feng-Lei Hong
• 通讯作者: Feng-Lei Hong

産総研におけるイッテルビウム光格子時計開発の現状

产业技术研究院镱光学晶格钟的开发现状

• 发表时间: 2011
• 期刊: 電気学会誌
• 作者: 安田正美;河野託也;保坂一元;稲場肇;中嶋善晶;赤松大輔;大苗敦;洪鋒雷
• 通讯作者: 洪鋒雷

Improved Absolute Frequency Measurement of the 171Yb Optical Lattice Clock towards the Redefinition of the Second

改进 171Yb 光晶格时钟的绝对频率测量，以重新定义秒

• 发表时间: 2013
• 作者: Masami Yasuda;Hajime Inaba;Takuya Kohno;Takehiko Tanabe;Yoshiaki Nakajima;Kazumoto Hosaka;Daisuke Akamatsu;Atsushi Onae;Tomonari Suzuyama;Masaki Amemiya;Feng-Lei Hong
• 通讯作者: Feng-Lei Hong