Frequency-Stabilized External Cavity Diode Laser at 1572 nm Based on Frequency Stability Transfer

A frequency-stabilized narrow-linewidth external cavity diode laser (ECDL) at the wavelength of the R18 carbon dioxide (CO 2 ) absorption line for space-borne CO 2 detection LIDAR is reported. The ECDL module based on the fiber Bragg grating (FBG) is integrated in a compact butterfly package, emitti...

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Bibliographic Details
Published in:IEEE photonics technology letters 2022-02, Vol.34 (4), p.203-206
Main Authors: Su, Qingshuai, Wei, Fang, Sun, Guangwei, Li, Shiguang, Wu, Rui, Pi, Haoyang, Chen, Dijun, Yang, Fei, Ying, Kang, Qu, Ronghui, Cai, Haiwen
Format: Article
Language:English
Subjects:
Bragg gratings
Carbon dioxide
Cavity resonators
external cavity diode laser
FBG
Fiber gratings
Fiber lasers
Frequency stability
Frequency stabilization
Laser stability
Laser tuning
linewidth
Optical fibers
Resonant frequency
Semiconductor lasers
space optics
Thermal stability
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Summary:A frequency-stabilized narrow-linewidth external cavity diode laser (ECDL) at the wavelength of the R18 carbon dioxide (CO 2 ) absorption line for space-borne CO 2 detection LIDAR is reported. The ECDL module based on the fiber Bragg grating (FBG) is integrated in a compact butterfly package, emitting at the wavelength of 1572.02 nm and provides continuous tunability of 22 GHz. A polarization-maintaining all-fiber ring resonator is used as a transfer cavity to transfer the long-term stability of a metrological frequency reference at 1550.12 nm to the target wavelength. The combination of narrowing linewidth technique and frequency stability transfer technique enables lasing with an intrinsic Lorentzian linewidth of 15 kHz as well as a relative frequency stability on the order of 10^{-12} for averaging time from 1 to 1000 s (minimum of 2.1\times 10^{-12} at 2 s).
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2022.3146634