Title :
Phase sensitive imaging system development for laser diagnostic systems with inherently large background constraints
Author :
Fisher, C.W. ; Middleton, N.T. ; Linne, M.A. ; Fiechtner, G. ; Gord, J.
Author_Institution :
Center for Commercial Appl. of Combustion in Space, Colorado Sch. of Mines, Golden, CO, USA
Abstract :
Summary form only given. A commercially available imaging system, using a 1030×1300 pixel, interline transfer CCD, is modified to produce a phase sensitive device that is also capable of reducing the level of integrated background light. The camera is able to extract a weakly modulated signal, that carries useful information, from a large amount of background intensity or DC offset. Based on initial results, the imaging system can reduce the integrated DC offset by an order of magnitude and detect a modulation depth of 10/sup -4/.
Keywords :
CCD image sensors; cameras; measurement by laser beam; optical modulation; DC offset; background intensity; camera; commercially available imaging system; imaging system; inherently large background constraints; integrated DC offset; integrated background light; interline transfer CCD; laser diagnostic systems; modulation depth; phase sensitive device; phase sensitive imaging system development; weakly modulated signal; Cameras; Charge coupled devices; Extraterrestrial measurements; Light sources; Logic circuits; Optical interferometry; Optical modulation; Probes; Semiconductor device measurement; Surface texture;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.833813
