Abstract

Lidar ${{\rm CO}_2}$ sensing can be performed by 1572 nm pulsed laser sources. This work presents the development of a fiber amplifier at this wavelength emitting 1 µs FWHM Gaussian pulses at a repetition rate of 7.5 kHz. We obtain the mitigation of stimulated Brillouin scattering (SBS) by shaping the seed laser spectrum into a frequency comb with sinusoidal phase modulation. This frequency comb is compatible with a coherent dual-comb spectroscopy (DCS) method for a targeted lidar ${{\rm CO}_2}$ sensing application. The effect of the harmonics spacing and relative intensity on the SBS threshold is studied. Laser pulses are amplified up to 182 µJ (182 W peak power) from a single-mode erbium (Er) and ytterbium (Yb) co-doped fiber. Those results hold promise for seeding large mode area Er-Yb co-doped fiber power amplifiers.

© 2024 Optica Publishing Group

High energy, 1572.3 nm pulses for CO₂ LIDAR from a polarization-maintaining, very-large-mode-area, Er-doped fiber amplifier

J. W. Nicholson, A. DeSantolo, M. F. Yan, P. Wisk, B. Mangan, G. Puc, A. W. Yu, and M. A. Stephen
Opt. Express 24(17) 19961-19968 (2016)

Theoretical study of filtered and amplified PRBS phase modulation for SBS suppression in a 2.5 kW, 10 GHz monolithic fiber amplifier

He Wang, Yifeng Yang, Yike Ren, Wei Xie, Xiaolong Chen, Kai Liu, Xiaoqiang Xiong, Junqing Meng, and Bing He
Opt. Express 32(5) 7090-7104 (2024)

2.05-µm all-fiber laser source designed for CO₂ and wind coherent lidar measurement

Julien Lahyani, Julien Le Gouët, Fabien Gibert, and Nicolas Cézard
Appl. Opt. 60(15) C12-C19 (2021)

Greenhouse gas monitoring using an IPDA lidar based on a dual-comb spectrometer

William Patiño Rosas and Nicolas Cézard
Opt. Express 32(8) 13614-13627 (2024)

High-energy single-longitudinal-mode Q-switched double-cladding fiber laser based on the injection seeding technique

Dong Zhang, Qiao Lu, and Qinghe Mao
Appl. Opt. 63(5) 1265-1271 (2024)