Ultralow background radiation far infrared spectroscopy based on the magnetically tunable selective sources, filters and detectors

W. Knap

doi:10.1117/12.2298529

30 August 1993 Ultralow background radiation far infrared spectroscopy based on the magnetically tunable selective sources, filters and detectors

W. Knap

Author Affiliations +

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21042P (1993) https://doi.org/10.1117/12.2298529
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

The way how to make spectroscopy in the far infrared by replacing mechanical spectral elements(moving mirrors or gratings) by superconducting solenoids is shown. The magnetic field changes the FIRproperties of the semiconductors through the cyclotron resonance or the Zeeman effect allowing to makespectroscopy in the range 35cm-1 - 160cm-1 with the resolution up to 0.3cm-1. We present the possibilities andlimits of the spectroscopy which uses a magnetic field to scan (tune) the characteristic energies of the narrowband spectral elements: sources, filters and detectors. All described below devices work immersed in theliquid helium bath. Therefore spectroscopy based on magnetically tunable narrow band elements provides alsoultralow background radiation conditions for measurements.

Citation Download Citation

W. Knap "Ultralow background radiation far infrared spectroscopy based on the magnetically tunable selective sources, filters and detectors", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21042P (30 August 1993); https://doi.org/10.1117/12.2298529

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