Naslov
Studies of Semitransparent Optoelectronic Position Sensors

Autori
Danielyan, Varuzhan ; Horvat, Sandra ; Kroha, Hubert

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of IEEE Sensors 2002 / IEEE Sensor Council - Orlando (FL), 2002, 829-835

Skup
IEEE Sensors Conference 2002

Mjesto i datum
Orlando (FL), Sjedinjene Američke Države, 12.06.2002. - 14.06.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
position sensors; semiconductor; amorphous silicon

Sažetak
Novel semitransparent optoelectronoc position sensors, the ALMY sensors, have been developed for high-precision multi-point position and angle measurements of collimated laser beams over a large measurement range. The sensors consist of a thin film of amorphous silicon deposited on a glass substrate between two transparent layers of crossed strip electrodes. They provide a position resolution on the order of a micrometer over sensitive areas of several square centimeters. A transmittance of 80-90% has been achieved for 780 nm laser light produced by diode lasers. We report about recent optimizations of the sensor performance and tests of the long-term stability under laser illumination and of the radiation tolerance at high neutron doses. As expected, the radiation hardness of the amorphous silicon sensors exceeds the one of silicon crystaline devices. The custom designed readout electronics allows for operation at sufficiently low laser intensities in order to prevent significant degradation of the performance of the amorphous silicon sensors under illumination with laser light.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA