Design review of an infrared phase-shifting interferometer
| Autor: | Paul R. DeStefano, H. Philip Stahl, Charles Joenathan, Arthur B. Western |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Wavefront
Engineering business.industry Infrared Astrophysics::Instrumentation and Methods for Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Wavelength Interferometry Optics Thermography Astronomical interferometer Calibration Surface roughness Astrophysics::Earth and Planetary Astrophysics business |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.140937 |
| Popis: | The design and system performance of an infrared phase-stepping interferometer is reviewed. This instrument is capable of measuring rms surface roughness with a repeatability of 0.02 waves. The instrument uses a 4-bucket unwrapping algorithm. Calibration of the interferometer and removal of inherent system aberrations are discussed along with the system performance, including repeatability and accuracy. The interferometer is an all-reflective optics design to permit use at any wavelength, accommodating both far- (10.6 micron) and near- (5 micron) infrared sources. Testing applications include infrared windows and surface testing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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