Infrared Spectral Responsivity Scales At NPL And The Calibration Of Detectors

1990 ◽  
Author(s):  
G. H. C. Freeman ◽  
D. H. Nettleton
Keyword(s):  
Spectral Responsivity ◽  
Infrared Spectral

Mid-infrared spectral responsivity scale based on an absolute cryogenic radiometer and a tunable quantum cascade laser

Metrologia ◽  
2021 ◽  
Vol 58 (2) ◽  
pp. 025003
Author(s):  
Wende Liu ◽  
Nan Xu ◽  
Yingwei He ◽  
Haiyong Gan ◽  
Guojin Feng ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Spectral Responsivity ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Cryogenic Radiometer ◽  
Infrared Spectral

scholarly journals Improved near-infrared spectral responsivity scale

2000 ◽  
Vol 105 (5) ◽  
pp. 689 ◽  
Author(s):  
P.S. Shaw ◽  
T.C. Larason ◽  
R. Gupta ◽  
S.W. Brown ◽  
K.R. Lykke
Keyword(s):  
Near Infrared ◽  
Spectral Responsivity ◽  
Infrared Spectral

High-accuracy, infrared, spectral responsivity scale

Metrologia ◽  
1998 ◽  
Vol 35 (4) ◽  
pp. 543-548 ◽  
Author(s):  
E Theocharous ◽  
T R Prior ◽  
P R Haycocks ◽  
N P Fox
Keyword(s):  
High Accuracy ◽  
Spectral Responsivity ◽  
Infrared Spectral

Establishing a new ultraviolet and near-infrared spectral responsivity scale

Metrologia ◽  
1998 ◽  
Vol 35 (4) ◽  
pp. 535-541 ◽  
Author(s):  
N P Fox ◽  
E Theocharous ◽  
T H Ward
Keyword(s):  
Near Infrared ◽  
Spectral Responsivity ◽  
Infrared Spectral

Infrared spectral responsivity scale realization and validations

2012 ◽  
Vol 51 (25) ◽  
pp. 6003 ◽  
Author(s):  
George P. Eppeldauer ◽  
Vyacheslav B. Podobedov
Keyword(s):  
Spectral Responsivity ◽  
Infrared Spectral

FR-IR Molecular Microanalysis System

1990 ◽  
Vol 48 (2) ◽  
pp. 270-271
Author(s):  
John A. Reffner ◽  
William T. Wihlborg
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Integrated System ◽  
Morphological Examination ◽  
Fully Integrated ◽  
Ir Microscopy ◽  
Normal Functions ◽  
Infrared Microspectroscopy ◽  
Infrared Spectral ◽  
Ft Ir

The IRμs™ is the first fully integrated system for Fourier transform infrared (FT-IR) microscopy. FT-IR microscopy combines light microscopy for morphological examination with infrared spectroscopy for chemical identification of microscopic samples or domains. Because the IRμs system is a new tool for molecular microanalysis, its optical, mechanical and system design are described to illustrate the state of development of molecular microanalysis. Applications of infrared microspectroscopy are reviewed by Messerschmidt and Harthcock.Infrared spectral analysis of microscopic samples is not a new idea, it dates back to 1949, with the first commercial instrument being offered by Perkin-Elmer Co. Inc. in 1953. These early efforts showed promise but failed the test of practically. It was not until the advances in computer science were applied did infrared microspectroscopy emerge as a useful technique. Microscopes designed as accessories for Fourier transform infrared spectrometers have been commercially available since 1983. These accessory microscopes provide the best means for analytical spectroscopists to analyze microscopic samples, while not interfering with the FT-IR spectrometer’s normal functions.

Supercontinuum laser-based monochromatic radiant source for detector spectral responsivity characterization in the range 0.9–1.6 μm using absolute cryogenic radiometer

2020 ◽  
pp. 28-33
Author(s):  
A. Yu. Dunaev ◽  
A. S. Baturin ◽  
V. N. Krutikov ◽  
S. P. Morozova
Keyword(s):  
Power Distribution ◽  
Spectral Power ◽  
Feedback System ◽  
Operating Mode ◽  
Spectral Responsivity ◽  
Spectral Power Distribution ◽  
Cryogenic Radiometer ◽  
Supercontinuum Laser ◽  
Radiant Power ◽  
Double Monochromator

An improved monochromatic radiant source with spectral bandwidth of 4 nm based on supercontinuum laser and a double monochromator was included in absolute cryogenic radiometer-based facility to improve the accuracy of spectral responsivity measurement in the range 0.9–1.6 μm. The developed feedback system ensures stabilization of monochromatic radiant power with standard deviation up to 0.025 %. Radiant power that proceeds detector under test or absolute cryogenic radiometer varies from 0.1 to 1.5 mW in dependence of wavelength. The spectral power distribution of its monochromatic source for various operating mode is presented.

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