Faraday imaging at high temperatures
Abstract
A Faraday filter rejects background light from self-luminous thermal objects, but transmits laser light at the passband wavelength, thus providing an ultra-narrow optical bandpass filter. The filter preserves images so a camera looking through a Faraday filter at a hot target illuminated by a laser will not see the thermal radiation but will see the laser radiation. Faraday filters are useful for monitoring or inspecting the uranium separator chamber in an atomic vapor laser isotope separation process. Other uses include viewing welds, furnaces, plasma jets, combustion chambers, and other high temperature objects. These filters are can be produced at many discrete wavelengths. A Faraday filter consists of a pair of crossed polarizers on either side of a heated vapor cell mounted inside a solenoid. 3 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- OSTI Identifier:
- 458587
- Patent Number(s):
- 5612538
- Application Number:
- PAN: 8-373,994; TRN: 97:006791
- Assignee:
- Univ. of California, Oakland, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 18 Mar 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; OPTICAL FILTERS; LASER ISOTOPE SEPARATION; THERMAL RADIATION; LASER RADIATION; CAMERAS; INSPECTION; USES; SEPARATION EQUIPMENT
Citation Formats
Hackel, L A, and Reichert, P. Faraday imaging at high temperatures. United States: N. p., 1997.
Web.
Hackel, L A, & Reichert, P. Faraday imaging at high temperatures. United States.
Hackel, L A, and Reichert, P. Tue .
"Faraday imaging at high temperatures". United States.
@article{osti_458587,
title = {Faraday imaging at high temperatures},
author = {Hackel, L A and Reichert, P},
abstractNote = {A Faraday filter rejects background light from self-luminous thermal objects, but transmits laser light at the passband wavelength, thus providing an ultra-narrow optical bandpass filter. The filter preserves images so a camera looking through a Faraday filter at a hot target illuminated by a laser will not see the thermal radiation but will see the laser radiation. Faraday filters are useful for monitoring or inspecting the uranium separator chamber in an atomic vapor laser isotope separation process. Other uses include viewing welds, furnaces, plasma jets, combustion chambers, and other high temperature objects. These filters are can be produced at many discrete wavelengths. A Faraday filter consists of a pair of crossed polarizers on either side of a heated vapor cell mounted inside a solenoid. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {3}
}