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Novel Infrared Phototransistors for Atmospheric CO2 profiling at 2 µm Wavelength
| Content Provider | CiteSeerX |
|---|---|
| Author | Refaat, Tamer F. Abedin, M. Nurul Sulima, Oleg V. Singh, Upendra N. Ismail, Syed |
| Abstract | Two-micron detectors are critical for atmospheric carbon dioxide profiling using the lidar technique. The characterization results of a novel infrared AlGaAsSb/ InGaAsSb phototransistor are reported. Emitter dark current variation with the collector-emitter voltage at different temperatures is acquired to examine the gain mechanism. Spectral response measurements resulted in responsivity as high as 2650 A/W at 2.05 µm wavelength. Bias voltage and temperature effects on the device responsivity are presented. The detectivity of this device is compared to InGaAs and HgCdTe devices. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Novel Infrared Phototransistors Atmospheric Co2 Different Temperature Characterization Result Device Responsivity Collector-emitter Voltage Spectral Response Measurement Emitter Dark Current Variation Atmospheric Carbon Dioxide Hgcdte Device Temperature Effect Lidar Technique Gain Mechanism Bias Voltage Algaassb Ingaassb Phototransistor Two-micron Detector |
| Content Type | Text |
