Gas Absorption Center-Based Wavelength Calibration Technique in QEPAS System for SNR Improvement
Sign Up to like & getrecommendations! Published in 2018 at "Photonic Sensors"
DOI: 10.1007/s13320-018-0502-0
Abstract: A simple and effective wavelength calibration scheme is proposed in a quartz enhanced photoacoustic spectroscopy (QEPAS) system for trace gas detection. A reference gas cell is connected an InGaAs photodetector for detecting the absorption intensity… read more here.
Keywords: absorption; wavelength calibration; system; gas ... See more keywords
Wavelength calibration of an imaging spectrometer based on Savart interferometer
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DOI: 10.1016/j.optcom.2017.04.026
Abstract: Abstract The basic principle of Fourier-transform imaging spectrometer (FTIS) based on Savart interferometer is outlined. The un-identical distribution of the optical path difference which leads to the wavelength drift of each row of the interferogram… read more here.
Keywords: based savart; savart interferometer; wavelength calibration; imaging spectrometer ... See more keywords
Improvement in QEPAS system utilizing a second harmonic based wavelength calibration technique
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.01.030
Abstract: Abstract A simple laser wavelength calibration technique, based on second harmonic signal, is demonstrated in this paper to improve the performance of quartz enhanced photoacoustic spectroscopy (QEPAS) gas sensing system, e.g. improving the signal to… read more here.
Keywords: technique; wavelength calibration; system; calibration technique ... See more keywords
Effects of Wavelength Calibration Mismatch on Temperature-Emissivity Separation Techniques
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2018.2814923
Abstract: Accurate estimation or retrieval of surface emissivity from long-wave infrared hyperspectral imaging data acquired by airborne or space-borne sensors is necessary for many scientific and defense applications. This process consists of two interwoven steps: atmospheric… read more here.
Keywords: wavelength calibration; temperature; error; temperature emissivity ... See more keywords
Improved Wavelength Calibration by Modeling the Spectrometer
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DOI: 10.1177/00037028221111796
Abstract: Wavelength calibration is a necessary first step for a range of applications in spectroscopy. The relationship between wavelength and pixel position on the array detector is approximately governed by a low-order polynomial and traditional wavelength… read more here.
Keywords: wavelength calibration; spectroscopy; accuracy; calibration ... See more keywords
FBG array based wavelength calibration scheme for Fourier domain mode-locked laser with pm resolution and hourly stability.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.475043
Abstract: We demonstrate a fiber Bragg grating (FBG) array based wavelength calibration scheme for Fourier domain mode-locked (FDML) laser. The wavelength interval and the temperature feedback module of the FBG array are designed to ensure the… read more here.
Keywords: calibration scheme; wavelength; wavelength calibration; fbg array ... See more keywords
Wavelength calibration of Brewer spectrophotometer using a tunable pulsed laser and implications to the Brewer ozone retrieval
Sign Up to like & getrecommendations! Published in 2018 at "Atmospheric Measurement Techniques"
DOI: 10.5194/amt-11-3759-2018
Abstract: Abstract. In this contribution we present the wavelength calibration of the travelling reference Brewer spectrometer of the Regional Brewer Calibration Center for Europe (RBCC-E) at PTB in Braunschweig, Germany. The wavelength calibration is needed for… read more here.
Keywords: methodology; wavelength calibration; brewer; calibration ... See more keywords