Xiaoyang YANG, Manling SHEN, Dahui WANG, Pengling YANG, Xiangyang LI. Mid-infrared trap detector technology based on cryogenic integrating sphere[J]. Journal of Applied Optics, 2024, 45(4): 685
- Journal of Applied Optics
- Vol. 45, Issue 4, 685 (2024)
Fig. 1. Schematic diagram of cryogenic mid-infrared trap detector
Fig. 2. Structure and principle of integrating sphere
Fig. 3. Schematic diagram of micro integrating sphere structure
Fig. 4. Photos of experimental samples
Fig. 5. SRI 1000 hand-held emissivity measuring instrument
Fig. 6. Schematic diagram of test for specific wavelength reflection characteristics
Fig. 7. Schematic diagram of diffuse reflection coordinate system
Fig. 8. Reflet 180S BRDF test system
Fig. 9. Variation curves of reflected radiation intensity with test angles
Fig. 10. Near infrared BRDF curves of different samples
Fig. 11. Photos of samples used for surface testing
Fig. 12. Photos of surface morphology
Fig. 13. Pseudo-color diagram of sample surface height
Fig. 14. Vertical profile curves of sample surface
Fig. 15. Scanning electron microscope image
Fig. 16. Diagram of produced integrating sphere
Fig. 17. Variation curve of light intensity attenuation ratio of integrating sphere with reflectivity of inner cavity wall
Fig. 18. Spectral response curves of detector chip before and after integrating sphere installation
Fig. 19. Schematic block diagram of infrared detector test system
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Table 1. Test results of wide spectrum reflectance of samples
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Table 2. Test results of relative reflectivity of samples
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Table 3. Electrical performance of detector chip before and after integrating sphere installation
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