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Absolute response and noise equivalent power of cyclotron resonance-assisted InSb detectors at submillimeter wavelengths
- Source :
- Journal of Applied Physics. 58
- Publication Year :
- 1985
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1985.
-
Abstract
- Spectra are presented of the responsivity and noise equivalent power (NEP) of liquid-helium-cooled InSb detectors as a function of magnetic field in the range 20-110 per cm. The measurements are all made using a Fourier transform spectrometer with thermal sources. The results show a discernable peak in the detector response at the conduction electron cyclotron resonance (CCR) frequency for magnetic fields as low as 3 kG. The magnitude of responsivity at the resonance peaks is roughly constant with magnetic field and is comparable to the low-frequency hot-electron bolometer response. The NEP at the peaks is found to be comparable to the best long wavelength results previously reported. For example, NEP = 4.5 x 10 to the 13th W/(square root of Hz) at 4.2 K, 6 kG, and 40 per cm was measured. The InSb CCR will provide a much improved detector for laboratory spectroscopy, as compared with hot electron bolometers, in the 20-100 per cm range.
- Subjects :
- Instrumentation And Photography
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 58
- Database :
- NASA Technical Reports
- Journal :
- Journal of Applied Physics
- Notes :
- NAGW-107
- Publication Type :
- Report
- Accession number :
- edsnas.19850064767
- Document Type :
- Report
- Full Text :
- https://doi.org/10.1063/1.335989