| 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. |
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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 |
| 引用本文：廉吉庆, 潘多, 赵天, 黄鹏翔, 陈景标.基于外腔半导体激光器的微型原子钟[J].计测技术,2025,45(2):26~32. |
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