Chalcogenide fiber for mid-infrared transmission and generation of laser source

2010 ◽  
Author(s):  
Francois Chenard ◽  
Robinson A. Kuis
Keyword(s):  
Laser Source ◽  
Infrared Transmission ◽  
Mid Infrared

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.

All Solid-State Mid Infrared Laser Source

1997 ◽  
Author(s):  
Ti Chuang ◽  
Ralph Burnham ◽  
R. B. Jones
Keyword(s):  
Solid State ◽  
Infrared Laser ◽  
Laser Source ◽  
Mid Infrared

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

Determination of Wavelength Accuracy in the Near-Infrared Spectral Region Based on NIST's Infrared Transmission Wavelength Standard SRM 1921

2000 ◽  
Vol 54 (3) ◽  
pp. 450-455 ◽  
Author(s):  
Stephen R. Lowry ◽  
Jim Hyatt ◽  
William J. McCarthy
Keyword(s):  
Reference Material ◽  
Standard Reference Material ◽  
Spectral Region ◽  
Near Infrared ◽  
Cost Effective ◽  
Infrared Transmission ◽  
Internal Reference ◽  
Mid Infrared ◽  
Infrared Spectral Region ◽  
Infrared Spectral

A major concern with the use of near-infrared (NIR) spectroscopy in many QA/QC laboratories is the need for a simple reliable method of verifying the wavelength accuracy of the instrument. This requirement is particularly important in near-infrared spectroscopy because of the heavy reliance on sophisticated statistical vector analysis techniques to extract the desired information from the spectra. These techniques require precise alignment of the data points between the vectors corresponding to the standard and sample spectra. The National Institute of Standards and Technology (NIST) offers a Standard Reference Material (SRM 1921) for the verification and calibration of mid-infrared spectrometers in the transmittance mode. This standard consists of a 38 μm-thick film of polystyrene plastic. While SRM 1921 works well as a mid-infrared standard, a thicker sample is required for use as a routine standard in the near-infrared spectral region. The general acceptance and proven reliability of polystyrene as a standard reference material make it a very good candidate for a cost-effective NIR standard that could be offered as an internal reference for every instrument. In this paper we discuss a number of the parameters in a Fourier transform (FT)-NIR instrument that can affect wavelength accuracy. We also report a number of experiments designed to determine the effects of resolution, sample position, and optics on the wavelength accuracy of the system. In almost all cases the spectral reproducibility was better than one wavenumber of the values extrapolated from the NIST reference material. This finding suggests that a thicker sample of polystyrene plastic that has been validated with the SRM 1921 standard would make a cost-effective reference material for verifying wavelength accuracy in a medium-resolution FT-NIR spectrometer.

TATP and TNT detection by mid-infrared transmission spectroscopy

2009 ◽  
Author(s):  
Johannes Herbst ◽  
Jürgen Hildenbrand ◽  
Jürgen Wöllenstein ◽  
Armin Lambrecht
Keyword(s):  
Infrared Transmission ◽  
Mid Infrared ◽  
Transmission Spectroscopy ◽  
Tnt Detection

Fluorotellurite glasses with improved mid-infrared transmission

2003 ◽  
Vol 331 (1-3) ◽  
pp. 48-57 ◽  
Author(s):  
M.D O’Donnell ◽  
C.A Miller ◽  
D Furniss ◽  
V.K Tikhomirov ◽  
A.B Seddon
Keyword(s):  
Infrared Transmission ◽  
Mid Infrared

Mid-infrared cascaded Raman laser source by gas-filled hollow-core fibers (Conference Presentation)

2019 ◽  
Author(s):  
Zefeng Wang ◽  
Wei Huang ◽  
Xiaoming Xi ◽  
Chen Shi ◽  
Wenguang Liu ◽  
...  
Keyword(s):  
Raman Laser ◽  
Laser Source ◽  
Hollow Core ◽  
Mid Infrared
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