| 基于外腔半导体激光器的微型原子钟 |
| Miniature atomic clock based on external cavity diode laser |
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| 中文摘要: |
| 为了解决传统微型和芯片级相干布居囚禁（Coherent Population Trapping， CPT）原子钟使用的垂直腔面发射激光器（Vertical Cavity Surface Emitting Laser， VCSEL）线宽大的问题，采用自研的激光芯片和毫米量级尺寸的光学元件，设计了一种适用于微型CPT铷原子钟、波长为795 nm的微型外腔半导体激光器（External Cavity Diode Laser， ECDL），该激光器尺寸小于1 cm3，且具有线宽窄、直接调制特性好的特点。基于该ECDL，首次实现了非VCSEL光源的微型原子钟设计验证，短期频率稳定度达到3.70 × 10-11@1 s，1.35 × 10-12@1 000 s，对后续研制高性能微型甚至芯片级原子钟产品具有重要意义。 |
| 英文摘要: |
| In order to solve the problems of wide linewidth of the vertical cavity surface emitting laser (VCSEL) used in traditional miniature and chip scale coherent population trapping (CPT) atomic clocks, a micro external cavity diode laser (ECDL) for CPT rubidium atomic clocks with a wavelength of 795 nm was designed using a self?developed laser chip and millimeter sized optical components. The laser has a size of less than 1 cm3 and features narrow linewidth and good direct modulation characteristics. Based on this ECDL, a miniature atomic clock with non?VCSEL light source has been achieved for the first time, with a short?term frequency stability of 3.70 × 10-11@1 s and 1.35 × 10-12@1 000 s. This is of great significance for the subsequent realization of high?performance miniature or even chip?scale atomic clock products. |
| Author Name | Affiliation | | LIAN Jiqing1,2,3, PAN Duo2, ZHAO Tian2,4, HUANG pengxiang5, CHEN Jingbiao2,6 | 1.School of Mechano?Electronic Engineering, Xidian University, Xi'an 710071, China
2.State Key Laboratory of Phyotoni?cs and Communications, Institute of Quantum Electronics, Department of Electronics, Peking University, Beijing 100871, China
3.Lanzhou Institute of Physics, Lanzhou 730000, China
4.China Quantum Measurement Tek Co. Ltd., Huzhou 313098，China
5.College of Electrical & Electronic Engineering, Wenzhou University, Wenzhou 325035, China
6.Hefei National Laboratory, Heifei 230088, China |
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| 中文关键词: 外腔半导体激光器 相干布居囚禁 微型原子钟 窄线宽激光器 |
| 英文关键词:external cavity diode laser coherent population trapping miniature atomic clock narrow linewidth laser |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2025.02.02 |
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