Spatial and spectral encoding technique for optical detection systems

Author

Duerr, K. ; Chaudry, J. ; Seethaler, R.J. ; Holzman, J.F.

Author_Institution

Sch. of Eng., Univ. of British Columbia (UBC), Kelowna, BC

fYear

2008

fDate

4-7 May 2008

Abstract

A technique for encoding modulation frequencies onto beam profiles is demonstrated. The experimental design employs phase-sensitive lock-in detection in a parallel format to encode and extract spatial and spectral information. This encoding technique is introduced by way of a Multichannel Optical Chopper, whose operation is demonstrated for a variety of spatial optical contrast masks and a spectral filter.

Keywords

encoding; modulation; optical elements; optical filters; beam profiles; encoding modulation frequencies; multichannel optical chopper; optical detection systems; parallel format; phase-sensitive lock-in detection; spatial encoding technique; spatial optical contrast masks; spectral encoding technique; spectral filter; Choppers; Encoding; Frequency modulation; Nonlinear optics; Optical detectors; Optical films; Optical filters; Optical mixing; Optical modulation; Optical noise; laser measurement; lock-in detection; lownoise detection; multichannel encoding; sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2008. CCECE 2008. Canadian Conference on

Conference_Location

Niagara Falls, ON

ISSN

0840-7789

Print_ISBN

978-1-4244-1642-4

Electronic_ISBN

0840-7789

Type

conf

DOI

10.1109/CCECE.2008.4564561

Filename

4564561