CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 12595 > Article
Paper
21 March 2023 Linewidth depth narrowing and control of linear cavity fiber laser based on distributed external feedback
Laiyang Dang, Jiali Li, Da Wei, Ligang Huang, Tao Zhu
Author Affiliations +
Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 1259506 (2023) https://doi.org/10.1117/12.2666719
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China
Abstract
A novel scheme to achieve linewidth depth narrowing and control of a single frequency Distributed Bragg Reflector (DBR) fiber laser based on distributed external feedback. Herein, the feedback signal can match the laser phase in real time to avoid the phase jump, thus realizing the laser mode is greatly suppressed. Moreover, it can also effectively suppress the unavoidable spontaneous radiation of the laser active medium, thus narrowing the linewidth in depth during the oscillation process. Based on this, the master laser can be regulated in an external all-optical approach by using a fiber device with controllable physical parameters. Eventually, an ultra-narrow linewidth laser with a spectral signal-to-noise ratio of 64 dB, a side mode suppression ratio of 83 dB, an output linewidth of 115 Hz. In particular, the Lorentz linewidth of the laser can be continuously adjusted from 115 Hz to 8.2 kHz by controlling the intensity of the distributed feedback signal. The proposed controllable mechanism of laser linewidth also provides a new perspective for extreme regulation of laser parameters of other types of lasers.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Laiyang Dang, Jiali Li, Da Wei, Ligang Huang, and Tao Zhu "Linewidth depth narrowing and control of linear cavity fiber laser based on distributed external feedback", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 1259506 (21 March 2023); https://doi.org/10.1117/12.2666719
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 5 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Fiber lasers
Laser frequency
Feedback control
Control systems
Feedback signals
Fiber Bragg gratings
Signal intensity
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top