An infrared (10 μm) wave front is recorded holographically on a dynamic recording medium consisting of a thin oil film on a glass substrate. The phase hologram obtained is used to restore the information of the infrared wave front or alternatively as a diffraction grating for a visible reconstruction beam. This property is applied to implement a single hybrid interferometer (Michelson or Mach–Zehnder) for the simultaneous testing of infrared and/or visible optical components. Experimental results for both visible and infrared components (parallel plate, lens) confirm the usefulness of this interferometer.
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© 1990 American Institute of Physics.
1990
American Institute of Physics
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