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

2020 ◽  
Vol 46 (1) ◽  
pp. 126
Author(s):  
Philippe Benoit ◽  
Simon Le Méhauté ◽  
Julien Le Gouët ◽  
Guillaume Canat
Keyword(s):  
Fiber Laser ◽  
Wind Velocity ◽  
Methane Concentration ◽  
Laser Source ◽  
Lidar Measurement

scholarly journals 205-µm all-fiber laser source designed for CO2 and wind coherent lidar measurement

2021 ◽  
Vol 60 (15) ◽  
pp. C12
Author(s):  
Julien Lahyani ◽  
Julien Le Gouët ◽  
Fabien Gibert ◽  
Nicolas Cézard
Keyword(s):  
Fiber Laser ◽  
Laser Source ◽  
Lidar Measurement ◽  
Coherent Lidar

Fiber laser source/analyzer for Bragg grating sensor array interrogation

1994 ◽  
Vol 12 (4) ◽  
pp. 700-703 ◽  
Author(s):  
G.A. Ball ◽  
W.W. Morey ◽  
P.K. Cheo
Keyword(s):  
Fiber Laser ◽  
Sensor Array ◽  
Laser Source ◽  
Bragg Grating ◽  
Bragg Grating Sensor

scholarly journals Mid-infrared photoacoustic gas monitoring driven by a gas-filled hollow-core fiber laser

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yazhou Wang ◽  
Yuyang Feng ◽  
Abubakar I. Adamu ◽  
Manoj K. Dasa ◽  
J. E. Antonio-Lopez ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Laser Source ◽  
High Signal ◽  
Mid Infrared ◽  
Raman Fiber Laser ◽  
Custom Made ◽  
Core Fiber ◽  
Detection Technologies

AbstractDevelopment of novel mid-infrared (MIR) lasers could ultimately boost emerging detection technologies towards innovative spectroscopic and imaging solutions. Photoacoustic (PA) modality has been heralded for years as one of the most powerful detection tools enabling high signal-to-noise ratio analysis. Here, we demonstrate a novel, compact and sensitive MIR-PA system for carbon dioxide (CO2) monitoring at its strongest absorption band by combining a gas-filled fiber laser and PA technology. Specifically, the PA signals were excited by a custom-made hydrogen (H2) based MIR Raman fiber laser source with a pulse energy of ⁓ 18 μJ, quantum efficiency of ⁓ 80% and peak power of ⁓ 3.9 kW. A CO2 detection limit of 605 ppbv was attained from the Allan deviation. This work constitutes an alternative method for advanced high-sensitivity gas detection.

scholarly journals Subwavelength Nanostructuring of Gold Films by Apertureless Scanning Probe Lithography Assisted by a Femtosecond Fiber Laser Oscillator

Nanomaterials ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 536 ◽  
Author(s):  
Ignacio Falcón Casas ◽  
Wolfgang Kautek
Keyword(s):  
Fiber Laser ◽  
Near Field ◽  
Diffraction Limit ◽  
High Repetition Rate ◽  
Scanning Probe ◽  
Optical Methods ◽  
Laser Source ◽  
Gold Films ◽  
Laser Oscillator ◽  
Scanning Probe Lithography

Optical methods in nanolithography have been traditionally limited by Abbe’s diffraction limit. One method able to overcome this barrier is apertureless scanning probe lithography assisted by laser. This technique has demonstrated surface nanostructuring below the diffraction limit. In this study, we demonstrate how a femtosecond Yb-doped fiber laser oscillator running at high repetition rate of 46 MHz and a pulse duration of 150 fs can serve as the laser source for near-field nanolithography. Subwavelength features were generated on the surface of gold films down to a linewidth of 10 nm. The near-field enhancement in this apertureless scanning probe lithography setup could be determined experimentally for the first time. Simulations were in good agreement with the experiments. This result supports near-field tip-enhancement as the major physical mechanisms responsible for the nanostructuring.

Shot noise limited fiber laser source for sensing applications

2008 ◽  
Author(s):  
Jong H. Chow ◽  
Timothy T. Y. Lam ◽  
Ian C. M. Littler ◽  
David E. McClelland ◽  
Malcolm B. Gray
Keyword(s):  
Fiber Laser ◽  
Shot Noise ◽  
Laser Source ◽  
Sensing Applications

Widely tunable mid-infrared fiber laser source based on soliton self-frequency shift in microstructured tellurite fiber

2015 ◽  
Vol 40 (17) ◽  
pp. 4094 ◽  
Author(s):  
M. Yu. Koptev ◽  
E. A. Anashkina ◽  
A. V. Andrianov ◽  
V. V. Dorofeev ◽  
A. F. Kosolapov ◽  
...  
Keyword(s):  
Frequency Shift ◽  
Fiber Laser ◽  
Laser Source ◽  
Mid Infrared
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