Journal of Infrared and Millimeter Waves, Volume. 43, Issue 4, 479(2024)
A monolithic integrated medium wave Mercury Cadmium Telluride polarimetric focal plane array
Fig. 1. Monolithic polarimetric FPA:(a) the schematic of a monolithic polarimetric FPA; (b) the arrangement of superpixels; (c) the established model to optimize structural parameters
Fig. 2. ER variation tendencies with respect to different structural parameters:(a) thickness; (b) period; (c) duty cycle
Fig. 3. MPA layout:(a) the previously reported MPA layout; (b) the modified one with expanded opaque regions
Fig. 4. MW 640 × 512 (25 μm) HgCdTe FPA:(a) monolithic integration process; (b) Ti/Au depositions; (c) laser direct writing; (d) iron-beam milling
Fig. 5. Surface morphologies of Au layers fabricated by:(a) e-beam evaporation; (b) magnetic sputtering; (c) ion beam sputtering
Fig. 6. Patterned line gratings with optimal process parameters of laser direct writing
Fig. 7. Cross-sectional profiles of etched line gratings before (a) and after (b) process condition modifications
Fig. 10. Blind pixel distribution diagrams of (a) A-type and (b) B-type polarimetric FPAs
Fig. 11. Blind pixel distribution diagram of the polarimetric FPA after the preliminary process optimization
Fig. 12. Polarization response curves of pixels with (a-d) 0°,45°,90°,and 135°orientations for the A-type polarimetric FPA
Fig. 13. Polarization response curves of pixels with (a-d) 0°,45°,90°,and 135°orientations for the B-type polarimetric FPA
Fig. 14. Polarization response curves of pixels with (a-d) 0°,45°,90°,and 135° orientations for the formally encapsulated B-type polarimetric FPA
Fig. 15. Specialized MPA layout to determine crosstalk rates from adjacent pixels of (a) 0°- and (b) 45°- oriented pixels
Fig. 16. Measured data used to determine the crosstalk rates from adjacent pixels of (a) 0°/90°- and (b) 45°/135°- oriented pixels for the A-type polarimetric FPA
Fig. 17. Measured data used to determine the crosstalk rates from adjacent pixels of (a) 0°/90°- and (b) 45°/135°-oriented pixels for the B-type polarimetric FPA
Fig. 18. Re-extracted ERs of (a) 0°- and (b) 45°-oriented pixels for the A-type polarimetric FPA
|
|
|
|
Get Citation
Copy Citation Text
Ze-Ji CHEN, You-Wen HUANG, En-Xiang PU, Hui-Shan XIAO, Shi-Chun XU, Qiang QIN, Jin-Cheng KONG. A monolithic integrated medium wave Mercury Cadmium Telluride polarimetric focal plane array[J]. Journal of Infrared and Millimeter Waves, 2024, 43(4): 479
Category: Research Articles
Received: Nov. 5, 2023
Accepted: --
Published Online: Aug. 27, 2024
The Author Email: Shi-Chun XU (x.sc@163.com)