Quantum Dots-in-a-Well Focal Plane Arrays

Vandervelde, Thomas E.; Lenz, M.; Varley, E.; Barve, Ajit V.; Shao, Jiayi; Shenoi, R. V.; Ramírez, David; Sharma, Yashika; Krishna, S.

doi:10.1109/jstqe.2008.918246

Cited by 32 publications

(22 citation statements)

References 37 publications

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“…The flip-chip bonding method of focal plane array (FPA) fabrication naturally lends itself to use with a double-metal resonant cavity, with only the top metal photonic crystal lithography step differing from standard process techniques. DWELL FPAs have already been demonstrated with hybridization to a readout integrated circuit [4,25]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

Design of plasmonic photonic crystal resonant cavities for polarization sensitive infrared photodetectors

Rosenberg¹,

Shenoi²,

Krishna³

et al. 2010

Opt. Express

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Abstract:We design a polarization-sensitive resonator for use in midinfrared photodetectors, utilizing a photonic crystal cavity and a single or double-metal plasmonic waveguide to achieve enhanced detector efficiency due to superior optical confinement within the active region. As the cavity is highly frequency and polarization-sensitive, this resonator structure could be used in chip-based infrared spectrometers and cameras that can distinguish among different materials and temperatures to a high degree of precision.

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Section: Resultsmentioning

confidence: 99%

Design of plasmonic photonic crystal resonant cavities for polarization sensitive infrared photodetectors

Rosenberg¹,

Shenoi²,

Krishna³

et al. 2010

Opt. Express

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“…A total of five different images were captured and displayed for cases of no filter and four different filters to visually inspect the effect of SP-FPA as compared with FPA. For a radiometric characterization of SP-FPA, the device sensitivity [31][32][33] was considered and obtained by taking the ratio of the signal voltage (V s ) to the noise voltage (V n ). The V s was measured by the FPA camera system seen the calibrated blackbody source through the narrowband filter with ∆λ~140 nm as shown in Supplementary Figure S7.…”

Section: Methodsmentioning

confidence: 99%

A monolithically integrated plasmonic infrared quantum dot camera

et al. 2011

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In the past few years, there has been increasing interest in surface plasmon-polaritons, as a result of the strong near-field enhancement of the electric fields at a metal-dielectric interface. Here we show the first demonstration of a monolithically integrated plasmonic focal plane array (FPA) in the mid-infrared region, using a metal with a two-dimensional hole array on top of an intersubband quantum-dots-in-a-well (DWELL) heterostructure FPA coupled to a read-out integrated circuit. Excellent infrared imagery was obtained with over a 160% increase in the ratio of the signal voltage (V s ) to the noise voltage (V n ) of the DWELL camera at the resonant wavelength of λ = 6.1 µm. This demonstration paves the way for the development of a new generation of pixel-level spectropolarimetric imagers, which will enable bio-inspired (for example, colour vision) infrared sensors with enhanced detectivity (D*) or higher operating temperatures.

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“…The most popular methods include the atomistic pseudopotential approach [62], eight-band k.p analysis [21,59,60,63] based on the valance force field method and numerical simulations based on finite volume methods [64,65]. Various groups around the world have successfully demonstrated good-quality infrared imaging [66][67][68][69][70] with QDIP-based FPAs. There are excellent articles covering the physics of QDIPs [61,71,72] and also that discuss the fundamental advantages and device characteristics as well as the stateof-the-art reviews [29,45,69,73,74].…”

Section: Introductionmentioning

confidence: 99%

Review of current progress in quantum dot infrared photodetectors

Barve

Lee

Noh

et al. 2009

Laser & Photonics Reviews

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124

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Quantum dot infrared photodetectors (QDIPs) have made significant progress after their early demonstration about a decade ago. The progress made by QDIP technology over the last few years is reviewed and compared with quantum well infrared photodetectors (QWIPs). It is shown that the performance of QDIPs has significantly improved using novel architectures such as dots-in-a-well designs, and large-format (1 K 1 K) focal plane arrays have been realized. However, even though there are significant reports of performance parameters better than QWIPs from single-pixel devices, QDIP-based focal plane arrays are still a factor of 3-5 worse in terms of noise equivalent temperature difference. The reasons for the performance gap and the key scientific and technological challenges that need to be addressed to achieve the full potential of QD-based technology are discussed.Three-dimensional rendition of quantum dots in a well structure.

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Quantum Dots-in-a-Well Focal Plane Arrays

Cited by 32 publications

References 37 publications

Design of plasmonic photonic crystal resonant cavities for polarization sensitive infrared photodetectors

Design of plasmonic photonic crystal resonant cavities for polarization sensitive infrared photodetectors

A monolithically integrated plasmonic infrared quantum dot camera

Review of current progress in quantum dot infrared photodetectors

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