Title :
High resolution laser LIDAR utilising two-section distributed feedback semiconductor laser as a coherent source
Author :
Burrows, Ellsworth C ; Liou, K.-Y.
Author_Institution :
AT&T Bell Lab., Crawford Hill Lab., Holmdel, NJ, USA
fDate :
4/26/1990 12:00:00 AM
Abstract :
An air-spaced coherent LIDAR (light detection and ranging) employing a two-section distributed feedback (DFB) injection laser is demonstrated. The relative distance of a mirror target was detected with 0.1 mu m resolution. The absolute distance of a diffuse target was measured with 1 cm accuracy. These results indicate that semiconductor lasers developed for communication systems may be useful for sensing applications such as robotic vision, surface profiling and automated fabrication.
Keywords :
distributed feedback lasers; measurement by laser beam; optical radar; semiconductor junction lasers; coherent source; distributed feedback; high-resolution optical radar; laser LIDAR; light detection; ranging; semiconductor laser; two section DFB injection laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900378