Compact FMCW advanced laser rangefinder

Author

Besesty, P. ; Labeye, P. ; Thony, P.

Author_Institution

CEA, Centre d´Etudes Nucleaires de Grenoble, France

fYear

1999

fDate

28-28 May 1999

Firstpage

552

Lastpage

553

Abstract

Summary form only given. Contactless range finders are currently used for measuring distance and velocity in various applications fields. Depending on range and required accuracy different principles are applied. We present the principle of the FMCW laser range finder. A lens collimates the emitted laser beam and focuses the diffused light onto the microchip cavity. The optical frequency sweep is achieved by an electro-optic crystal directly stuck on the Nd:YAG material. The beat frequencies intensity are detected by a PIN photodiode.

Keywords

FM radar; laser ranging; lenses; optical collimators; p-i-n photodiodes; photodetectors; FMCW laser range finder; Nd:YAG material; PIN photodiode; YAG:Nd; YAl5O12:Nd; beat frequencies intensity; compact FMCW advanced laser rangefinder; contactless range finders; diffused light focusing; distance measurement; electro-optic crystal; emitted laser beam; lens collimators; optical frequency sweep; photodetectors; velocity measurement; Crystalline materials; Current measurement; Frequency; Laser beams; Lasers and electrooptics; Lenses; Microchip lasers; Optical collimators; Stimulated emission; Velocity measurement;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CLEO.1999.834583

Filename

834583