Wavefront divinding ring-interferometers for the far infrared

K. D. Moeller

doi:10.1117/12.2298648

30 August 1993 Wavefront divinding ring-interferometers for the far infrared

K. D. Moeller

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 210460 (1993) https://doi.org/10.1117/12.2298648
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

The incoming wavefront is diffracted at the reflectors. One set of reflectors is displacedwith respect to the other and light from the two sets is interfering with light from the other set. Formonochromatic light, if the optical path difference between the two sets is such that we haveconstructive interference, all the light travels in the direction of reflection (zero order). If we havedestructive interference, the light is diffracted into the first and higher orders and travel into adirection making an angle with the direction of reflection, but light is traveling in the direction ofreflection. We can change the displacement between the two sets of reflectors at a sequence ofintervals such that we have alternating light falling on the detector and not. The recorded intensityis the interferogram.

Citation Download Citation

K. D. Moeller "Wavefront divinding ring-interferometers for the far infrared", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 210460 (30 August 1993); https://doi.org/10.1117/12.2298648

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