A new double FFT-based filter to reduce the effect of 1/f noise spectrum in a tunable diode laser spectrometer (TDLS)

2013 ◽  
Author(s):  
Samira Mahdi ◽  
Youhua Chen ◽  
Gary Anderson
Keyword(s):  
Diode Laser ◽  
Noise Spectrum ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer

Kalman filtering of tunable diode laser spectrometer absorbance measurements

1994 ◽  
Vol 33 (24) ◽  
pp. 5506 ◽  
Author(s):  
Haris Riris ◽  
Clinton B. Carlisle ◽  
Russell E. Warren
Keyword(s):  
Diode Laser ◽  
Kalman Filtering ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer

HHigh Resolution Spectroscopy Using a Stabilized Diode Laser: the 2υ9 Band of HNO3

1988 ◽  
Vol 43 (5) ◽  
pp. 402-406 ◽  
Author(s):  
Thomas Giesen ◽  
M. Harter ◽  
R. Schieder ◽  
G. Winnewisser ◽  
K.M.T. Yamada
Keyword(s):  
High Resolution ◽  
Spectral Data ◽  
Internal Rotation ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Fermi Resonance ◽  
High Resolution Spectrum ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Stabilization Technique

The high resolution spectrum of the 2 υ9 band of HNO3 has been recorded by a tunable diode laser spectrometer with a newly developed frequency stabilization technique. The spectral data were digitally stored and processed by a dedicated micro-computer in order to improve the sensitivity and the precision of the measurements. In addition to the anomalies due to the Fermi resonance with the υ5 = 1 state, we have observed the line doubling caused by the internal rotation of the OH group.

Improved Spectroscopic Constants for 14C16O2 Obtained from the ν3 Band

1989 ◽  
Vol 44 (7) ◽  
pp. 633-639 ◽  
Author(s):  
S. Dobos ◽  
G . Winnewisser ◽  
F. Kling ◽  
J. Mink
Keyword(s):  
High Resolution ◽  
Diode Laser ◽  
Spectral Region ◽  
Tunable Diode Laser ◽  
Spectroscopic Constants ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Medium Resolution ◽  
Carrier Free ◽  
Ftir Spectrometer

The absorption spectra of carrier free 14C16O2 in the spectral range of 2290-2150 cm−1 by a medium resolution FTIR spectrometer, and the spectral region of 2258 − 2229 cm−1 with a high resolution tunable diode laser spectrometer have been recorded. Spectroscopic constants were calculated from the 0001 − 0000 and 0111 −0110 transitions.

A compact tunable diode laser spectrometer for environmental monitoring

1993 ◽  
Author(s):  
Shachar D. Nadler ◽  
David R. Karecki ◽  
Gervase I. Mackay ◽  
Harold I. Schiff
Keyword(s):  
Environmental Monitoring ◽  
Diode Laser ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer

Line-shape study of water vapour by tunable diode laser spectrometer in the 822?832�nm wavelength region

2004 ◽  
Vol 79 (7) ◽  
pp. 915-921 ◽  
Author(s):  
A. Ray ◽  
A. Bandyopadhyay ◽  
B. Ray ◽  
D. Biswas ◽  
P.N. Ghosh
Keyword(s):  
Diode Laser ◽  
Water Vapour ◽  
Line Shape ◽  
Wavelength Region ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer

Absolute line intensity measurements in the ν2 bands of HDO and D2O using a tunable diode laser spectrometer

1986 ◽  
Vol 120 (2) ◽  
pp. 239-245 ◽  
Author(s):  
K.B. Thakur ◽  
Curtis P. Rinsland ◽  
Mary Ann H. Smith ◽  
D.Chris Benner ◽  
V. Malathy Devi
Keyword(s):  
Diode Laser ◽  
Line Intensity ◽  
Tunable Diode Laser ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Intensity Measurements

scholarly journals A simulation process of tunable open path diode laser spectrometer to detect a carbon monoxide gas in NIR region

2022 ◽  
Vol 961 (1) ◽  
pp. 012081
Author(s):  
Ruaa Kahtan Mahmood ◽  
Samira Adnan Mehdi
Keyword(s):  
Carbon Monoxide ◽  
Diode Laser ◽  
Near Infrared ◽  
Second Harmonic ◽  
Wave Length ◽  
Tunable Diode Laser ◽  
Theoretical Research ◽  
Laser Spectrometer ◽  
Diode Laser Spectrometer ◽  
Open Path

Abstract By modifying the wavelength of the open path tunable diode laser spectrometer (TDLS) in the near infrared region, theoretical research was implemented to improve the detection limit of carbon monoxide gas. To adjust the correct wavelength in the NIR area, MatLab code was created. Following that, frequency domain measurements were performed in order to extract the second harmonic as an indicator of gas presence. According to the results, the correct wave length in the NIR area is (1584.877 nm), and the lowest limit of CO gas concentration is (0.012 ppb).

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