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

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.

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All Solid-State Mid Infrared Laser Source

Advanced Solid State Lasers ◽

10.1364/assl.1997.pc9 ◽

1997 ◽

Author(s):

Ti Chuang ◽

Ralph Burnham ◽

R. B. Jones

Keyword(s):

Solid State ◽

Infrared Laser ◽

Laser Source ◽

Mid Infrared

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High average power, widely tunable femtosecond laser source from red to mid-infrared based on an Yb-fiber-laser-pumped optical parametric oscillator

Optics Letters ◽

10.1364/ol.38.001820 ◽

2013 ◽

Vol 38 (11) ◽

pp. 1820 ◽

Cited By ~ 23

Author(s):

Chenglin Gu ◽

Minglie Hu ◽

Limeng Zhang ◽

Jintao Fan ◽

Youjian Song ◽

...

Keyword(s):

Femtosecond Laser ◽

Fiber Laser ◽

Optical Parametric Oscillator ◽

Average Power ◽

Parametric Oscillator ◽

Laser Source ◽

High Average Power ◽

Mid Infrared ◽

Optical Parametric

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

Optics Letters ◽

10.1364/ol.40.004094 ◽

2015 ◽

Vol 40 (17) ◽

pp. 4094 ◽

Cited By ~ 51

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

Applied Spectroscopy ◽

10.1366/0003702001949573 ◽

2000 ◽

Vol 54 (3) ◽

pp. 450-455 ◽

Cited By ~ 5

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.

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