Qiwen Zhang, Qinghua Liang, Huijun Guo, Honglei Chen, Ruijun Ding. Research on testing of active and passive HgCdTe APD detector in linear mode[J]. Infrared and Laser Engineering, 2021, 50(6): 20200460

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- Infrared and Laser Engineering
- Vol. 50, Issue 6, 20200460 (2021)

Fig. 1. (a) APD readout circuit Unit structure; (b) APD readout circuit working sequence

Fig. 2. System of circuit test

Fig. 3. Labview software design front panel and parameter setting

Fig. 4. Test method flow

Fig. 5. System noise test

Fig. 6. Ramp generator fixed time delay

Fig. 7. DetectorI /V test results

Fig. 8. Test results of HgCdTe APD intensity information

Fig. 9. (a) Circuit test sequence; (b) HgCdTe APD detector and circuit coupling test results

Fig. 10. Ramp slope

Fig. 11. V 2d, V 3d sampling results and TOF calculation results

Fig. 12. RMS results of TOF under multiple collections

Fig. 13. TOF test results under different ramp delays and slopes
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Table 1. Geiger and linear mode APD performance comparsion
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Table 2. Readout circuit performance parameters
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Table 3. Instrument parameters
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Table 4. Circuit test conditions
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Table 5. Performance parameters that affect TOF resolution
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Table 6. Comparison of the proposed work with the Sofradir test platform and test results

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