Fig. 1. Absorption of incident photons with energy of hϖ0

Fig. 2. Energy band structure and electric field intensity distribution of photoconductivity detectors

Fig. 3. Spectral properties of photoconductive detectors

Fig. 4. pin junction detector

Fig. 5. pin junction detector spectral properties

Fig. 6. Two-layer bandgap detector

Fig. 7. Spectral properties of two-layer bandgap detectors

Fig. 8. Energy band structure of multilayer bandgap detector

Fig. 9. Distribution of photogenerated carrier production rates for multilayer bandgap detectors

Fig. 10. Spectral response curves of multilayer bandgap detectors