Title :
New broad-spectrum interferometry for high-sensitive measurement
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Ibaraki, Japan
Abstract :
Two types of heterodyne broad-spectrum interferometers for highly-sensitive measurements are described. One uses two acoustooptic modulators and the other a diffraction grating to provide the optical frequency shift of a broad spectrum of light. The principle and some experimental results arc shown.
Keywords :
acousto-optical modulation; diffraction gratings; heterodyne detection; light interferometry; sensitivity; spectral line shift; surface topography measurement; acoustooptic modulators; broad light spectrum; broad-spectrum interferometry; diffraction grating; heterodyne broad-spectrum interferometers; high-sensitivity measurement; optical frequency shift; spectral shift; Diffraction gratings; Frequency; Interferometers; Optical diffraction; Optical interferometry; Optical mixing; Optical modulation; Optical sensors; Optical surface waves; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967927
