Tellurium‐stabilized blue laser diode

• Published in: Microwave and optical technology letters Vol. 65; no. 5; pp. 1042 - 1046
• Main Authors: Chen, Xiaoming, Wang, Zhiyuan, Xu, Ying, Tsai, Chin‐Chun, Chen, Nan‐Kuang, Chui, Hsiang‐Chen
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc 01-05-2023
• Subjects: Absorption spectroscopy; Frequency stability; Frequency stabilization; frequency standards; laser diode; laser stabilization; Optical frequency; Semiconductor lasers; single frequency; Tellurium; tunable lasers
• ISSN: 0895-2477; 1098-2760
• DOI: 10.1002/mop.33102

A robust and compact blue optical frequency reference within blue region was designed. A 40‐mW tellurium‐stabilized single‐frequency blue diode laser in external cavity was designed with an absorption spectroscopy method based on tellurium molecular transitions. Furthermore, the uncertainty of the frequency stabilization can be pushed to 2 × 10−9 at a 10‐s integration time. In addition, the correspondence frequency instability was 1.3 MHz when the laser wavelength was 445.75 nm. This study indicates that high‐stability frequency reference within the blue region can be achieved with an external cavity diode laser as opposed to the diode‐pumped frequency‐doubled solid‐state laser.