Manufacturability of type-II InAs/GaSb superlattice detectors for infrared imaging

Höglund, Linda; Asplund, Carl; Würtemberg, R. Marcks von; Kataria, Himanshu; Gamfeldt, A.; Smuk, Sergiy; Martijn, Henk; Costard, E.

doi:10.1016/j.infrared.2017.03.002

Cited by 33 publications

(16 citation statements)

References 4 publications

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“…The type-II superlattice (T2SL) FPA has been chosen to illustrate our MTF measurement technique since no such characterization has been made so far on theT2SL technology integrated in a cryocooler, that is to say in an operational packaging. Indeed, T2SL have shown promising prospects thus far [1][2][3][4][5][6][7][8]. Thus, it is a suitable candidate for high performance infrared imaging applications in which the MTF measurement is demanded.…”

Section: I) Introductionmentioning

confidence: 99%

Study of the MTF of a MWIR T2SL focal plane array in IDDCA configuration

Nghiem

Jaeck

Derelle

et al. 2019

Infrared Physics & Technology

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Section: I) Introductionmentioning

confidence: 99%

Study of the MTF of a MWIR T2SL focal plane array in IDDCA configuration

Nghiem

Jaeck

Derelle

et al. 2019

Infrared Physics & Technology

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“…For example, quantum detectors can be based either on II-VI materials or on III-V materials [1]. Antimony-based type-II superlattice (T2SL) detectors are a recently matured III-V technology [2] which could combine the advantages of several technologies: the cut-off wavelength can be tailored thanks to band gap engineering, the electro-optical performance (especially quantum efficiency) is close to that of HgCdTe [3], high operating temperatures are accessible [4], and promising results in terms of spatial uniformity and operability have been reported [5]. This maturity enabled to study its potential for radiation thermometry for example [6].…”

Section: Introductionmentioning

confidence: 99%

Robust Evaluation of Long-Term Stability of an InAs/GaSb Type II Superlattice Midwave Infrared Focal Plane Array

Arounassalame

Guénin

Caes

et al. 2021

IEEE Trans. Instrum. Meas.

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The temporal stability of the image quality of an infrared focal plane array (FPA) is one key parameter to consider for high performance imaging applications. It is generally evaluated through Residual Fixed Pattern Noise (RFPN) measurements realized after a two-point correction (TPC) and bad pixels exclusion. However, the effect of random telegraph signal (RTS) on temporal stability has never been quantified, the intermittent blinking of RTS pixels making measurements inherently complicated. In this paper, we propose a novel protocol and a novel data processing technique to fully characterize the temporal stability of an infrared FPA, thanks to simultaneous RFPN and RTS noise measurements. Using a robust statistics based on Median Absolute Deviation (MAD) leads to a more trustful RFPN evaluation, unaffected by the bad pixels exclusion step. This new protocol can be applied to any FPA technology, cooled or uncooled, operating in the [3-14µm] spectral domain. We chose to use a Type-II superlattice (T2SL) midwave infrared FPA integrated in a cryocooler at 80K. We show that the long-term stability of this 320x256 pixels FPA is excellent. The RFPN only slightly increases over 77 days, using a TPC that has been calculated on the first day of the measurements campaign. A simple offset update, compatible with operational contingencies, can further improve the temporal stability of this FPA. Only 0.3% of the pixels were affected by RTS noise at some moment. Those blinking pixels don't affect the RFPN evolution, which is a very encouraging result for T2SL detector technology.

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“…Type-II Superlattice (T2SL) is a recent infrared detection technology whose excellent electro-optical performances (expressed as quantum efficiency, dark current density, specific detectivity or NETD) have been widely reported from the shortwave to the very longwave infrared domains [1][2][3][4][5][6][7][8][9][10]. They thus position themselves in competition with well-established cooled infrared technologies (HgCdTe, InSb, XBn, QWIP, etc) for high-performance applications such as radiometric imaging.…”

Section: Introductionmentioning

confidence: 99%

Temporal stability and correctability of a MWIR T2SL focal plane array

Ribet-Mohamed

Nghiem

Caes

et al. 2019

Infrared Physics & Technology

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Stability over time has recently become a figure of merit of major importance to compare the performances of infrared focal plane arrays (FPA) of different technologies. Indeed, this parameter dictates how often the calibration of operational electro-optical systems has to be done, and thus reflects the availability of the system during an operational mission. Recent studies also showed that random telegraph signal (RTS) noise, which leads to flickering pixels, can strongly affect the image quality. Highlights :-Stability over time and RTS noise of a commercial T2SL midwave infrared FPA have been investigated.-RFPN/TN ratio stays lower than unity for more than 7 weeks-number of RTS pixels is as low as 10 for a 5-minutes long measurement

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Manufacturability of type-II InAs/GaSb superlattice detectors for infrared imaging

Cited by 33 publications

References 4 publications

Study of the MTF of a MWIR T2SL focal plane array in IDDCA configuration

Study of the MTF of a MWIR T2SL focal plane array in IDDCA configuration

Robust Evaluation of Long-Term Stability of an InAs/GaSb Type II Superlattice Midwave Infrared Focal Plane Array

Temporal stability and correctability of a MWIR T2SL focal plane array

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