Multi-wavelength laser scanning architecture for object discrimination

A novel method for identifying and discriminating various objects using five different lasers is described. This method uses a laser combination module that allows five laser diodes of different wavelengths to sequentially emit identically polarized light beams through a common aperture, along one o...

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Bibliographic Details
Published in7th International Symposium on High-capacity Optical Networks and Enabling Technologies pp. 196 - 199
Main Authors Venkataraayan, Kavitha, Askraba, Sreten, Alameh, Kamal E, Smith, Clifton L
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Cavity resonators
High speed optical techniques
Laser beams
laser scanning and data processing
laser sensors
Laser spectroscopy
Optical beams
Optical imaging
Optical reflection
remote sensing
Semiconductor lasers
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Summary:A novel method for identifying and discriminating various objects using five different lasers is described. This method uses a laser combination module that allows five laser diodes of different wavelengths to sequentially emit identically polarized light beams through a common aperture, along one optical path. Each laser beam enters a custom-made curved optical cavity for multi-beam spot generation through internal partial beam reflection. The intensity of the reflected light beams from each spot is detected by a high-speed area scan image sensor. Object discrimination based on analyzing the Gaussian profile of reflected laser light at distinguishing wavelengths is demonstrated.
ISBN:1424499224
9781424499229
ISSN:1949-4092
1949-4106
DOI:10.1109/HONET.2010.5715772