Passively mode-locked faraday laser with narrowband spectrum aligned to rubidium atomic transition lines

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-05-08 DOI:10.1016/j.optlastec.2025.113145

Zhihong Gao , Duo Pan , Hangbo Shi , Zhiyang Wang , Huifang Hou , Tiantian Shi , Zhigang Zhang , Jingbiao Chen

{"title":"Passively mode-locked faraday laser with narrowband spectrum aligned to rubidium atomic transition lines","authors":"Zhihong Gao , Duo Pan , Hangbo Shi , Zhiyang Wang , Huifang Hou , Tiantian Shi , Zhigang Zhang , Jingbiao Chen","doi":"10.1016/j.optlastec.2025.113145","DOIUrl":null,"url":null,"abstract":"<div><div>Mode-locked lasers, characterized by their short pulses and broad optical spectra, are extensively utilized in scientific research, precision spectroscopy, and frequency metrology. However, the current multi-frequency laser spectroscopy technology, employed in ultra-stable lasers and atomic clocks, demands laser spectrum to exclusively cover atomic transition lines, which is not satisfied by conventional broad-spectrum mode-locked lasers. Here we present a novel passively mode-locked 780 nm Faraday laser using a 5-torr argon-mixed <sup>85</sup>Rb atomic filter as a saturable absorber (SA), with narrowband spectrum aligned to the <sup>87</sup>Rb 5<sup>2</sup>S<sub>1/2</sub>F = 2 → 5<sup>2</sup>P<sub>3/2</sub> Doppler-broadened transition line. Moreover, the Faraday laser can be switched to a single-frequency mode by adjusting the injection current of the laser diode (LD). The system utilizes a Faraday anomalous dispersion optical filter (FADOF) to achieve precise frequency selection and mode-locking operation. This work demonstrates a novel approach to generating narrowband mode-locked lasers, with potential applications in atomic precision spectroscopy, quantum sensing and frequency metrology.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113145"},"PeriodicalIF":4.6000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399225007364","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}

引用次数: 0

Abstract

Mode-locked lasers, characterized by their short pulses and broad optical spectra, are extensively utilized in scientific research, precision spectroscopy, and frequency metrology. However, the current multi-frequency laser spectroscopy technology, employed in ultra-stable lasers and atomic clocks, demands laser spectrum to exclusively cover atomic transition lines, which is not satisfied by conventional broad-spectrum mode-locked lasers. Here we present a novel passively mode-locked 780 nm Faraday laser using a 5-torr argon-mixed ⁸⁵Rb atomic filter as a saturable absorber (SA), with narrowband spectrum aligned to the ⁸⁷Rb 5²S_1/2F = 2 → 5²P_3/2 Doppler-broadened transition line. Moreover, the Faraday laser can be switched to a single-frequency mode by adjusting the injection current of the laser diode (LD). The system utilizes a Faraday anomalous dispersion optical filter (FADOF) to achieve precise frequency selection and mode-locking operation. This work demonstrates a novel approach to generating narrowband mode-locked lasers, with potential applications in atomic precision spectroscopy, quantum sensing and frequency metrology.

查看原文本刊更多论文

窄带光谱对准铷原子跃迁线的被动锁模法拉第激光器

锁模激光器具有脉冲短、光谱宽的特点，广泛应用于科学研究、精密光谱学和频率计量等领域。然而，目前用于超稳定激光器和原子钟的多频激光光谱技术要求激光光谱只覆盖原子跃迁线，这是传统的广谱锁模激光器所不能满足的。本文提出了一种新型被动锁模780 nm法拉第激光器，采用5 torr氩混合85Rb原子滤光片作为可饱和吸收剂（SA），窄带光谱对准87Rb 52S1/2F = 2→52P3/2多普勒加宽过渡线。此外，通过调节激光二极管（LD）的注入电流，法拉第激光器可以切换到单频模式。该系统利用法拉第反常色散滤光片（FADOF）实现精确的频率选择和锁模操作。这项工作展示了一种产生窄带锁模激光器的新方法，在原子精密光谱学、量子传感和频率计量方面具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems