Title :
A novel binarily detectable high-speed optical position-sensitive device (BPSD)
Author :
Dutta, Achyut Kumar ; Takahashi, Hidetoshi ; Hatanaka, Yoshinori
Author_Institution :
Res. Inst. of Electron., Shizuoka Univ., Hamamatsu, Japan
fDate :
3/1/1992 12:00:00 AM
Abstract :
A binary position sensitive device (BPSD) which can be used to detect the position of optical illumination in the binary form is described. This device consists of a p-i-n structure, sandwiched with two-axis (x and y) stripelike electrodes. For preliminary laboratory demonstration, a test device with an active area of 1 cm2 including 8×8 elements was fabricated using an a-SiC:H single heterostructure. The fabricated device showed a high-speed response of 0.3 μs for the pulsive input illumination and high quantum efficiency over more than unity having a dark current of 10 pA/element. Output signal uniformity was ±5%, which is suitable for digital applications. In this demonstration, it was found that the response limitation depends on the computer processing time
Keywords :
amorphous semiconductors; hydrogen; image sensors; p-i-n diodes; photodetectors; photodiodes; position measurement; silicon compounds; 0.3 sec; 10 pA; SiC:H; a-SiC:H single heterostructure; active area; binarily detectable high-speed optical position-sensitive device; binary form; computer processing time; dark current; high quantum efficiency; high-speed response; laboratory demonstration; optical illumination; output signal uniformity; p-i-n structure; photodetector; pulsive input illumination; response limitation; stripelike electrodes; test device; Electrodes; High speed optical techniques; Laboratories; Lighting; Optical detectors; Optical devices; Optical sensors; PIN photodiodes; Position sensitive particle detectors; Testing;
Journal_Title :
Lightwave Technology, Journal of
