Infrared Interferometers At 10 µm

Jacques Lewandowski; Bernard Mongeau; Maurice Cormier; Jean Lapierre

doi:10.1117/12.938602

25 November 1986 Infrared Interferometers At 10 µm

Jacques Lewandowski, Bernard Mongeau, Maurice Cormier, Jean Lapierre

Proceedings Volume 0661, Optical Testing and Metrology; (1986) https://doi.org/10.1117/12.938602
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

The two infrared (10µm) wavefronts of an interferometer (Michelson or Mach-Zehnder) interfere separately with a tilted reference beam on a dynamic recording medium consisting of a thin oil film on a glass substrate. Illumination of this twin hologram with a visible (HeNe) beam reconstructs simultaneously, in the same direction, two wavefronts characteristic of each arm of the interferometer. Practical realization and experimental constraints, such as air turbulence and mechanical vibrations, are easily satisfied with these long-wave-length interferometers. Experimental results include air wedge determination, homogeneity test of a NaCl plate, step deposit evaluation and afocal assembly analysis. The real-time aspect of our recording medium also permits the visual observation of transient phenomena.

Citation Download Citation

Jacques Lewandowski, Bernard Mongeau, Maurice Cormier, and Jean Lapierre "Infrared Interferometers At 10 µm", Proc. SPIE 0661, Optical Testing and Metrology, (25 November 1986); https://doi.org/10.1117/12.938602

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available