Title :
Optical heterodyne refractometry in the microwave range to 100 GHz
Author :
Fang, H. ; Himbert, M. ; Khelifa, N. ; Juncar, P. ; Pendrill, L.R.
Author_Institution :
Bur. Int. des Poids et Mesures, Sevres, France
Abstract :
A novel, heterodyne refractometer, consisting of a Fabry-Perot optical interferometer to which pairs of lasers are locked in wavelength, is being further developed to study the anomalous dispersion of a gas, in order to provide an alternative method to well-established absorption-based techniques of determining gas concentration.
Keywords :
Fabry-Perot interferometers; gas sensors; measurement by laser beam; microwave measurement; refractive index measurement; 100 GHz; Fabry-Perot optical interferometer; anomalous dispersion; gas concentration; microwave range; optical heterodyne refractometry; Frequency measurement; Gas lasers; Length measurement; Masers; Optical interferometry; Optical mixing; Optical refraction; Optical sensors; Optical variables control; Spectroscopy;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850978
