Electrical tuning of emissivity and linewidth of thermal emission spectra

2015 ◽  
Vol 91 (23) ◽  
Author(s):  
Takuya Inoue ◽  
Menaka De Zoysa ◽  
Takashi Asano ◽  
Susumu Noda
Keyword(s):  
Thermal Emission ◽  
Emission Spectra

scholarly journals Results from the Infrared Spectroscopy Experiment on Mariner 9

1974 ◽  
Vol 65 ◽  
pp. 293-294 ◽  
Author(s):  
J. Pearl ◽  
B. Conrath ◽  
R. Curran ◽  
R. Hanel ◽  
V. Kunde ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Spectral Range ◽  
Spectral Resolution ◽  
Thermal Emission ◽  
Emission Spectra ◽  
Spatial Coverage ◽  
Spectroscopy Experiment ◽  
Mariner 9

Over 20000 thermal emission spectra of Mars have been obtained, providing extensive diurnal, seasonal and spatial coverage of the planet. Each spectrum covers the spectral range from 200 to 2000 cm−1 with an apodized spectral resolution of 2.4 cm−1; the noise equivalent radiance of the instrument is 0.5 × 10−7 W cm−2 sr−1 (cm−1)−1.

Infrared Emission Spectra of Indium Phosphide at Elevated Temperatures

1997 ◽  
Vol 502 ◽  
Author(s):  
H. Rogne ◽  
P. J. Timans ◽  
H. Ahmed
Keyword(s):  
Elevated Temperatures ◽  
Semiconductor Device ◽  
Thermal Emission ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Device Fabrication ◽  
Optical Measurements ◽  
Optical Data ◽  
Monitoring And Control ◽  
Process Monitoring And Control

ABSTRACTProcess monitoring and control during semiconductor device fabrication frequently relies on good knowledge of the optical properties of the substrate wafer and the surface coatings. However, these optical data are often unavailable, and as a consequence errors arise in pyrometric temperature measurements, as well as in thermal modelling of heating cycles. In this study, isothermal electron beam heating has been combined with in situ optical measurements to record thermal emission spectra of undoped InP specimens from 347 to 478°C, at wavelengths between I and 9 μm. The absorption coefficient was deduced from the emission spectra and reveals information about the temperature dependence of the infrared absorption mechanisms in InP.

scholarly journals High spectral resolution interferometric planetary observations in the 7–25 μ region

1971 ◽  
Vol 40 ◽  
pp. 44-47
Author(s):  
R. A. Hanel ◽  
V. G. Kunde ◽  
T. Meilleur ◽  
G. Stambach
Keyword(s):  
Spectral Range ◽  
Spectral Resolution ◽  
Thermal Emission ◽  
Emission Spectra ◽  
Rotational Structure ◽  
High Spectral Resolution ◽  
The Moon ◽  
Broad Absorption ◽  
Ratio Spectrum ◽  
Venusian Atmosphere

The thermal emission spectra of Venus, Mars, Jupiter, and the moon were observed at the coude focus of the McDonald Observatory 107-inch telescope in the 400–1400 cm−1 spectral range with spectral resolutions of 0.3–0.7 cm−1. A preliminary interpretation of the Venus/lunar ratio spectrum allows identification of four upper state CO2 bands in the Venusian atmosphere at 791, 828, 865, and 961 cm−1 and confirms previous observations of the broad absorption-like depression around 890 cm−1. The rotational structure of the 791 and 961 cm−1 bands is well developed at this spectral resolution.

scholarly journals Detection of organic compound signatures in infra-red, limb emission spectra observed by the MIPAS-B2 balloon instrument

2007 ◽  
Vol 7 (6) ◽  
pp. 1599-1613 ◽  
Author(s):  
J. J. Remedios ◽  
G. Allen ◽  
A. M. Waterfall ◽  
H. Oelhaf ◽  
A. Kleinert ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Formic Acid ◽  
Organic Compounds ◽  
Thermal Emission ◽  
Emission Spectra ◽  
High Spectral Resolution ◽  
Spectral Features ◽  
Model Calculations ◽  
Upper Troposphere ◽  
Infra Red

Abstract. Organic compounds play a central role in troposphere chemistry and increasingly are a viable target for remote sensing observations. In this paper, infra-red spectral features of three organic compounds are investigated in thermal emission spectra recorded on a flight on 8 May 1998 near Aire sur l'Adour by a balloon-borne instrument, MIPAS-B2, operating at high spectral resolution. It is demonstrated, for the first time, that PAN and acetone can be detected in infra-red remote sensing spectra of the upper troposphere; detection results are presented at tangent altitudes of 10.4 km and 7.5 km (not acetone). In addition, the results provide the first observation of spectral features of formic acid in thermal emission, as opposed to solar occultation, and confirm that concentrations of this gas are measurable in the mid-latitude upper troposphere, given accurate spectroscopic data. For PAN, two bands are observed centred at 794 cm−1 and 1163 cm−1. For acetone and formic acid, one band has been detected for each so far with band centres at 1218 cm−1 and 1105 cm−1 respectively. Mixing ratios inferred at 10.4 km tangent altitude are 180 pptv and 530 pptv for PAN and acetone respectively, and 200 pptv for formic acid with HITRAN 2000 spectroscopy. Accuracies are on the order of 15 to 40%. The detection technique applied here is verified by examining weak but known signatures of CFC-12 and HCFC-22 in the same spectral regions as those of the organic compounds, with results confirming the quality of both the instrument and the radiative transfer model. The results suggest the possibility of global sensing of the organic compounds studied here which would be a major step forward in verifying and interpreting global tropospheric model calculations.

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