Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

All-fiber laser source at 1645 nm for lidar measurement of methane concentration and wind velocity

Not Accessible

Your library or personal account may give you access

Abstract

We report on the realization of an all-fiber laser source that delivers single-frequency pulses at 1645 nm, on a linearly polarized single-mode beam, based on stimulated Raman scattering in passive fibers. The pulse energy reaches 14 µJ for a repetition rate of 20 kHz, and the spectral linewidth is 9.5 MHz for 100 ns square pulses. To the best of our knowledge, this energy is the highest reported at 1645 nm in an all-fiber laser source. Our method consists of reducing the stimulated Brillouin scattering (SBS) gain for the pump and signal pulses, respectively, by sweeping the optical frequency of the pump beam, and by applying a strain gradient on the amplification fiber. This compact laser source is now used in a transportable lidar system to measure simultaneously wind velocity and methane (${{\rm CH}_4}$) concentration.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Performance assessment of a coherent DIAL-Doppler fiber lidar at 1645 nm for remote sensing of methane and wind

Nicolas Cezard, Simon Le Mehaute, Julien Le Gouët, Matthieu Valla, Didier Goular, Didier Fleury, Christophe Planchat, and Agnes Dolfi-Bouteyre
Opt. Express 28(15) 22345-22357 (2020)

Hybrid fiber/bulk laser source designed for CO2 and wind measurements at 2.05 µm

Julien Lahyani, Mathys Thiers, Fabien Gibert, Dimitri Edouart, Julien Le Gouët, and Nicolas Cézard
Opt. Lett. 49(4) 969-972 (2024)

1645 nm coherent Doppler wind lidar with a single-frequency Er:YAG laser

KaiXin Wang, ChunQing Gao, ZhiFeng Lin, Qing Wang, MingWei Gao, Shuai Huang, and ChaoYong Chen
Opt. Express 28(10) 14694-14704 (2020)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved