A lamellar grating interferometer for the far-infrared
1979; Pergamon Press; Volume: 19; Issue: 2 Linguagem: Inglês
10.1016/0020-0891(79)90022-8
ISSN1878-1160
Autores Tópico(s)Advanced Fiber Optic Sensors
ResumoAbstract A lamellar grating interferometer has been constructed for use in studies of the optical properties of solids in the frequency range 2–50 cm−1. The interferometer uses a 19 × 24cm lamellar grating with a 2.5 cm grating constant and 2.75 cm of travel giving a maximum unapodized resolution of 0.1 cm−1. Two 50cm focal length f/1.8 collimating mirrors are used in a Czerny-Turner arrangement. Light-pipe optics feed the light to and from the focal points of the collimating mirrors. The entire assembly is mounted in a vacuum tank which is supported on nitrogen filled bellows for vibration isolation purposes.
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