Wavefront accuracy of mechanically assembled all-cordierite reflective optical system for cryogenic applications.
Appl Opt
; 62(11): 2827-2834, 2023 Apr 10.
Article
em En
| MEDLINE
| ID: mdl-37133125
ABSTRACT
Although a reflective optical system can theoretically realize ideal optical designs, it is not always the optimal choice compared with a refractive one because of the difficulty in achieving high wavefront accuracy. A promising solution is to build reflective optical systems by mechanically assembling all the optical and structural components made of cordierite, which is a ceramic with a very low thermal expansion coefficient. Interferometric evaluations of an experimental product demonstrated that diffraction-limited performance in the visible wavelength was achieved and maintained even after cooling to 80 K. This new technique may be the most cost-effective method for utilizing reflective optical systems, especially for cryogenic applications.
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MEDLINE
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En
Revista:
Appl Opt
Ano de publicação:
2023
Tipo de documento:
Article