Zhijiang Zeng1,2,3, Xue Li1,2,*, Songmin Zhou1,2, Fulong Zhuang1,2..., Guangyu Fan1,2, Zhenyi Hao1,2, Cui Fan1,2,3 and Haimei Gong1,2|Show fewer author(s)
Author Affiliations
1State Key Laboratories of Transducer Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China2Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China3University of Chinese Academy of Sciences, Beijing 100049, Chinashow less
DOI: 10.3788/IRLA20230005
Cite this Article
Zhijiang Zeng, Xue Li, Songmin Zhou, Fulong Zhuang, Guangyu Fan, Zhenyi Hao, Cui Fan, Haimei Gong. SWIR focal plane array cooled assembly of Tianwen-1 mineralogical spectrometer[J]. Infrared and Laser Engineering, 2023, 52(10): 20230005
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Fig. 1. Photograph of 512×320 SWIR detector of the MMS
Fig. 2. Dewar structure design for 512×320 SWIR detector
Fig. 3. Requirements of filter partition design
Fig. 4. Noise distribution of IDDCA with 40 ms integration time
Fig. 5. Schematic diagram of cold platform with the noise isolation
Fig. 6. Detector noise distribution with 40 ms integration time of noise isolation structure
Fig. 7. Schematic diagram of IDDCA for the MMS
Fig. 8. Illustration of short wave IDDCA
Fig. 9. The cooldown time curve of IDDCA under different fill pressures
Fig. 10. Spectral response curve and imaging photo of IDDCA
| Item | Characteristics | Remarks | | Detection bands | From SWIR to MWIR
spectral detection
| | | Broad spectrum spectroscopy | 1000-3400 nm[7] | Divided into A/B/C bands
Band A:
1-1.9 μm；
Band B:
1.4-2.7 μm；
Band C:
2.1-3.4 μm
| | Low background noise | 250e− | | | Typical SNR | 150 | | | Operating temperature | 80 K/90 K/150 K | Three switchable operating temperatures | | SWaP | Small size, low weight (IDDCA ≤ 800 g), low power consumption (stable power ≤ 12 W) | | | Reliability test | Thermal cycle test; thermal vacuum test; high temperature storage; low temperature storage; acceleration; 1400 g mechanical shock; sinusoidal and random vibration; open/close loop and life; electromagnetic compatibility (EMC) etc. | Full test |
|
Table 1. The characteristic of IDDCA for the MMS
| Item | Specifications | Item | Specifications | | Optical F/# (fn)
| 2.87 | Typical wavelength/μm | 1.595/1.0/3.4 | | Unit cells (a1×a1)/μm2 | 25×25 | Grating transmittance (ηg)
| 0.3173/0.0814/
0.4418
| | Spectral
resolution (λw)/nm
| 20 | Solar irradiance (L)/W·m−2·μm−1 | 258.30/751/
16.59
| | Surface albedo (Re)
| 0.15 | Lens efficiency (η0)
| 0.9 | | Solar altitude
angle (Ah)
| 0.707 | Integration time (Tint1)/s
| 0.02 |
|
Table 2. The main optical parameters of the MMS
| Item | Parameters | Test results | | IDDCA performance | Spectral response range/μm | 1.0-3.4 | | Detector response characteristics | Non-uniformity | 4.8% | | Quantum efficiency | 3.4 μm@50% | | 1.0 μm@16.5% | | Rate of blind pixels | 0.55% | | Detector readout mode | Non-linearity | 0.764% | | Output saturation voltage/V | 2.225 | | Frame frequency/Hz | 60.44 | | IDDCA | SNR | 225@1.595 μm |
|
Table 3. The SWIR detector parameters in the MMS
| Part name | Material | Density/kg·m−3 | Mass/g | | Cold platform | 4J36 | 8100 | 6.92 | | infrared detector | MCT | 5.76 | 0.43 | | Silicon circuit | Si | 2330 | 0.39 | | Substrate | Al2O3 | 4020 | 0.62 | | Filter holder | 4J29 | 8350 | 2.53 | | Filter | Al2O3 | 4020 | 1.00 | | Cold shield | Ni/Co | 8908 | 1.29 | | Total | 13.18 |
|
Table 4. Components and their mass at the top of cold finger in Dewar
| Main parameters | Name | Test results | | Main performance
of IDDCA
| Spectral response range/μm | 1.0-3.4 | | Total weight/g | 711.2 | | Thermal loss | 539 mW@80 K | | Power supply | 24VDC & 12 VDC | | Switchable operating temperatures/K | 80/90/150 | | Temperature stability | 0.2 K@30 min | | Cooldown time | 12 min@90 K | | Temperature accuracy/K | 0.3 | | Detector response characteristics | Non-uniformity | 4.8% | | Quantum efficiency | 3.4 μm@50% | | 1.0 μm@16.5% | | Rate of blind pixels | 0.55% | | Non-linearity | 0.764% | | Detector readout mode | Frame frequency/Hz | 60.44 | | SNR | 225@1.595 μm |
|
Table 6. The specifications of short wave IDDCA
