640×512 pixel narrow-band, four-band, and broad-band quantum well infrared photodetector focal plane arrays

Gunapala, Sarath D.; Bandara, S. V.; Liu, J.K.; Rafol, Sir B.; Mumolo, Jason M.; Shott, C. A.; Jones, R. Jason; Woolaway, James T.; Fastenau, J. M.; Liu, A.K.; Jhabvala, M.; Choi, K. K.

doi:10.1016/s1350-4495(03)00162-2

Cited by 21 publications

(13 citation statements)

References 7 publications

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“…At present multicolor QWIP detectors are fabricated at Jet Propulsion Laboratory (JPL) [49][50][51][52][53][54][55], Army Research Laboratory [56][57][58], Goddard [58,59], Thales [60][61][62][63][64], and AIM [42,65,66] with the majority being based on bound-to-extended transitions.…”

Section: Multiband Qwipsmentioning

confidence: 99%

“…The experimentally Figure 14). The device structure consists of a 15-period stack of 3 to 5 mm QWIP structure, a 25-period stack of 8.5 to 10 mm QWIP structure, a 25-period stack of 10 to 12 mm QWIP structure, and a 30-period stack of 14 to 15.5 mm QWIP structure [52]. The four bands of the QWIP array were defined by a deep trench etch process and the unwanted spectral bands were eliminated by a detector short-circuiting process using gold-coated reflective 2D etched gratings as shown in Figure 14(a).…”

Section: Multiband Qwipsmentioning

confidence: 99%

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Recent progress in third generation infrared detectors

Rogalski

2010

Journal of Modern Optics

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In this paper, issues associated with the recent development third generation detectors are discussed. In this class of detectors HgCdTe photodiodes, type II superlattice photodiodes, quantum-well infrared photoconductors (QWIPs), and quantum dot IR photodetectors (QDIPs) are considered. The main challenges facing multicolor devices concern complicated device structures, thicker and multilayer material growth, and more difficult device fabrication, especially when the array size gets larger and pixel size gets smaller. Also discussion on the on-going detector technology efforts is presented.

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Section: Multiband Qwipsmentioning

confidence: 99%

Section: Multiband Qwipsmentioning

confidence: 99%

Recent progress in third generation infrared detectors

Rogalski

2010

Journal of Modern Optics

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“…Different bispectral demonstrators operating both in the 8 -12 µm long-wavelength infrared regime (LWIR) and the 3 -5 µm mid-wavelength infrared spectral range (MWIR) have been realized using either CdHgTe technology or GaAsbased quantum well infrared photodetectors (QWIPs) [1,2,3]. The CdHgTe material system offers flexibility in cut-off wavelength and a high performance due to a high quantum efficiency and low dark current and the method of choice for the fabrication of bispectral CdHgTe FPAs is molecular beam epitaxy (MBE) [4].…”

Section: Introductionmentioning

confidence: 99%

Antimony-based superlattices for high-performance infrared imagers

et al. 2008

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InAs/GaSb short-period superlattices (SL) for the fabrication of mono- and bispectral thermal imaging systems in the mid-wavelength infrared region (MWIR) have been optimized in order to increase the spectral response of the imaging systems. The responsivity in monospectral InAs/GaSb short-period superlattices increases with the number of periods in the intrinsic region of the diode and does not show a diffusion limited behavior for detector structures with up to 1000 periods. This allows the fabrication of InAs/GaSb SL camera systems with high responsivity. Dual-color MWIR/MWIR InAs/GaSb SL camera systems with high quantum efficiency for missile approach warning systems with simultaneous and spatially coincident detection in both spectral channels have been realized

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“…Large infrared detector arrays with excellent thermal and spatial resolution, low fixed-pattern noise, low 1/f noise, and high pixel yield can thus be realized at moderate cost [1][2][3][4]. For the 8-12 lm long-wavelength infrared (LWIR) spectral band, QWIP presently represents the only infrared sensor technology that commercially supplies large 640 · 480 staring FPAs.…”

Section: Introductionmentioning

confidence: 99%