Interferometric device having a controllable Fabry-Perot

Details Interferometric device having a controllable Fabry-Perot Interferometric device having a controllable Fabry-Perot

1990-07-12

1991-10-22

Turner, Samuel

Optics: measuring and testing

By particle light scattering

With photocell detection

356352, G01B 902

Patent

active

050590260

ABSTRACT:
An interferometric device for the detection of substances having a periodic or quasiperiodic absorption structure of their absorption spectrum includes a source of radiation, a chamber containing the material to be investigated and a downstream detector, a thermo-optically effective and temperature controlled interference filter means is interposed, its thickness determines the spacing of interference transmission lines and temperature control shifts these lines.

REFERENCES:
patent: 4999013 (1991-03-01), Zoechbauer et al.

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