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- W1851726914 abstract "HgCdTe avalanche photodiode single element detectors have been developed for a large scope of photon starvedapplications. The present communication is dedicated to use of these detectors for free space optical communications. Inthis perspective we present and discuss the sensitivity and bandwidth that has been measured directly on HgCdTe APDsand on detector modules. In particular, we report on the performance of TEC cooled large area detectors with sensitivediameters ranging from 30- 200 μm, characterised by detector gains of 2- 20 V/μW and noise equivalent input power of0.1-1 nW for bandwidths ranging from 20 to 400 MHz. One of these detectors has been used during the lunar lasercommunication demonstration (LLCD) and the results The perspectives for high data rate transmission is estimated fromthe results of impulse response measurements on HgCdTe APDs. These results indicate that bandwidths close to 10 GHzcan be achieved in these devices. The associated sensitivity at an APD gain of 100 is estimated to be below 4 photonsrms (NEP<10 nW) for APDs operated at 300 K." @default.
- W1851726914 created "2016-06-24" @default.
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- W1851726914 date "2015-10-29" @default.
- W1851726914 modified "2023-09-30" @default.
- W1851726914 title "HgCdTe APDs for free space optical communications" @default.
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- W1851726914 doi "https://doi.org/10.1117/12.2197171" @default.
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