High-Frequency Modulation Spectroscopy with a THz Quantum-Cascade Laser [PDF]
, 2013 A terahertz absorption spectrometer with a quantum-cascade laser (QCL) for high-resolution molecular spectroscopy is realized. The spectrometer is based on highfrequency (up to 50 MHz) modulation of the QCL frequency.
H.-W. Hubers +11 more
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Optical fiber sensing based on reflection laser spectroscopy [PDF]
, 2010 An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and ...
De Natale, Paolo +34 more
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Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy. [PDF]
, 2011 Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bioceramic samples. The relationship between sample hardness and LIBS plasma properties was investigated, with comparison to conventional Vickers hardness measurements.
Moser, D. +23 more
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Molecular spectroscopy with a multimode THz quantum-cascade laser [PDF]
, 2011 A terahertz absorption spectrometer for highresolution molecular spectroscopy is realized. The spectrometer is based on a multimode quantum-cascade laser. The design and performance of the spectrometer are presented.
A. D. Semenov +19 more
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Self-mixing interference effects in tunable diode laser absorption spectroscopy [PDF]
, 2009 We report the effects of self-mixing interference on gas detection using tunable diode laser spectroscopy. For very weak feedback, the laser diode output intensity gains a sinusoidal modulation analogous to that caused by low finesse etalons in the ...
Hodgkinson, J. +7 more
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Concept and operating performance of inspection machines for industrial use based on laser-induced breakdown spectroscopy [PDF]
, 2022 S.1070-1075In the last years laser-induced breakdown spectroscopy was introduced in various industrial applications. Automated inspection machines were developed capable to operate under harsh ambient conditions.
Noll, R. +3 more
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Advanced methods for enhanced sensing in biomedical Raman spectroscopy [PDF]
, 2015 Raman spectroscopy is a powerful tool in the field of biomedicine for disease diagnosis owing to its potential to provide the molecular fingerprint of biological samples.
Balagopal, Bavishna
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An open-path, hand-held laser system for the detection of methane gas [PDF]
, 2005 We have developed an open-path hand-held gas detector incorporating a distributed feedback InGaAs laser diode at 1.65 µm. Incorporated into a hand-held transceiver unit, the emitted laser beam is backscattered from nearby surfaces, collected and focused ...
Padgett, M +13 more
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A novel concept for in situ gas-phase laser Raman spectroscopy for solid oxide fuel cell research [PDF]
, 2013 A planar solid oxide fuel cell (SOFC) operated with hydrogen at T=1123 K was equipped with an optically transparent anode flow field to apply species concentration measurements by 1D laser Raman scattering. The flow channels had a cross section of 3 mm Ã
Kapadia, Bhavin +8 more
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Combustion applications of laser-induced breakdown spectroscopy [PDF]
, 2020 The laser-induced breakdown spectroscopy (LIBS) technique has the capability to perform multielemental, remote, online, in situ analysis with no/minimum sample preparations. LIBS has created a great deal of interest in combustion diagnostic research.
Fang Y. Yueh +10 more
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