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Updated: Jun 17, 2026
08:01
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Magnetooptical studies of solids using fourier transform spectroscopy
1U.S. Naval Research Laboratory,Washington, DC 20390, USA.
Applied Optics
|January 9, 2010
Summary
This study adapted an interferometric spectrometer for polarized far infrared magneto-optical studies. The enhanced system, utilizing a superconducting magnet, successfully investigated donor impurity states in indium antimonide.
Area of Science:
- Condensed matter physics
- Spectroscopy
- Materials science
Background:
- Far-infrared (FIR) magneto-optical spectroscopy is crucial for probing electronic states in materials.
- Previous systems faced limitations in sensitivity and spectral range for certain investigations.
- Adaptation of existing instrumentation is a common strategy to advance experimental capabilities.
Purpose of the Study:
- To adapt an existing interferometric spectrometer for polarized far-infrared magneto-optical investigations.
- To integrate a superconducting magnet and specialized detectors for enhanced measurements.
- To demonstrate the system's capability by studying donor impurity states in indium antimonide.
Main Methods:
- Modification of a Research and Industrial Instruments Company interferometric spectrometer.
- Incorporation of a superconducting magnet for tunable magnetic fields.
- Utilized light pipe optics for efficient signal transmission.
- Employed an indium antimonide (InSb) free electron bolometer and an extrinsic germanium (Ge) photoconductive detector.
Main Results:
- The adapted spectrometer successfully performed polarized far-infrared magneto-optical measurements.
- The system demonstrated high sensitivity with the integrated InSb bolometer and Ge detector.
- Investigations provided insights into donor impurity states in indium antimonide.
Conclusions:
- The adapted interferometric spectrometer is a versatile tool for far-infrared magneto-optical studies.
- The integration of superconducting magnets and advanced detectors significantly enhances experimental capabilities.
- This approach facilitates detailed characterization of electronic properties in semiconductors like indium antimonide.
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