Fig. 1. The schematic of （a） ICIP with SL absorbers，（b） band structure

Fig. 2. （a） Front incident，（b） back incident of 3-stage ICIP

Fig. 3. Quantum efficiency of （a） M1，（b） M3，（c） M5，（d） M10 detectors at different bias voltages and temperatures

Fig. 4. （a） The electric field under the applied bias voltage，the inset is the corresponding potential diagram，（b） the electric field distribution diagram of the applied bias voltage

Fig. 5. The distribution of the applied bias voltage of two-stage interband cascade detector

Fig. 6. The experimental and calculation quantum efficiencies of M1 at different temperatures

Fig. 7. The experimental and calculation quantum efficiencies of multistage ICIP at low temperatures with （a） front incident，（b） back incident

Fig. 8. The experimental and calculation quantum efficiencies of （a） M3，（b） M5，（c） M10 at high temperatures with front incident and back incident