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

Rosenberg, J.J.; Shenoi, R. V.; Krishna, S.; Painter, Oskar

doi:10.1364/oe.18.003672

Cited by 50 publications

(32 citation statements)

References 29 publications

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“…Rosenberg et al showed that a metal-coated dots-in-a-well (DWELL) photonic crystal cavity can be designed to achieve significant free-space coupling of normal-incident light. 231 Additionally, Boriskina et al show that the large confinement of high-Q cavities could be combined with the superior light concentrating properties of nanoantennas to create optoplasmonic superlenses for low-loss energy transfer within optical circuits. 232 The proposed superlens is composed of a polystyrene microsphere sandwiched between two gold nanodimer antennas, creating a device that is well suited for frequency-sensitive enhancement and switching of light at the nanoscale.…”

Section: Recent Applications Of High-q Optical Sensorsmentioning

confidence: 99%

High-Q Optical Sensors for Chemical and Biological Analysis

2011

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Section: Recent Applications Of High-q Optical Sensorsmentioning

confidence: 99%

High-Q Optical Sensors for Chemical and Biological Analysis

2011

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“…The electromagnetic field profile of the SP structure was modeled using both a finite integration technique (CST Microwave Studio) 23 and a rigorous coupled wave analysis (RCWA) 24,25 . The refractive index of the material (n eff ) was taken to be the effective index of the first order resonance of SP modes (~ λ 1,0 /p) and the Drude model for the gold dielectric function at frequencies of interest is described by a plasma frequency p = 9.02 eV and a scattering frequency ω c = 0.027 eV [26][27] .…”

Section: Epitaxial Growth and Fabricationmentioning

confidence: 99%

Quantum dot focal plane array with plasmonic resonator

Krishna

2011

SPIE Proceedings

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In the recent past, there has been an increasing interest in coupling surface plasmon structures with detectors. There are three main reasons that this approach has been exciting. The first is due to the fact that plasmonic structures can incorporate enhanced functionality such as color, polarization and dynamic range in the pixel. The second is the enhancement of the near-field electromagnetic field, which can be exploited for enhanced absorption and photocurrent. Thirdly, the electromagnetic field can be concentrated to a deep-subwavelength region. If the absorber is placed at the field point of the concentrator, the signal to noise ratio and the speed of the detector can be dramatically increased. In this paper, we report on some of our results on the use of plasmonic structures with quantum dot focal plane arrays.

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“…From the last decade, due to the exotic properties of metamaterials at subwavelength scale they are in continuous use for the performance improvement of microwave absorbers [4]. The ultra-thin thickness and nearly unity absorbance property of a metamaterial based absorber make it a useful candidate from microwave to optical frequencies in many potential applications such as cloaking [5], antennas [6], radar imaging [7], thermal emission [8,9] photodetector [10], solar cells [11], etc. Metamaterial absorbers are so designed that incident electromagnetic energy on the structure manipulate its effective permittivity and permeability in such a way that input impedance of the structure become equals to the free space impedance and minimizes the reflection from it.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Wide-Angle Ultra-Thin Metamaterial Microwave Absorber

Sood¹,

Tripathi²

2015

PIER M

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Abstract-A novel design of wideband, ultra-thin, wide-angle metamaterial microwave absorber has been presented. The unit cell of the proposed structure is designed by using parametric optimization in such a way that absorption frequencies come closer and give wideband response. For normal incidence, the simulated FWHM bandwidth of the proposed structure is 1.94 GHz, i.e., from 5.05 GHz to 6.99 GHz and −10 dB absorption bandwidth is 1.3 GHz from 5.27 GHz to 6.57 GHz. The proposed structure has been analyzed for different angles of polarization, and it gives high absorption (more than 50%) for oblique angles of incidence up to 60 • . The designed absorber is in low profile with a unit cell size of λ 0 /6 and ultrathin with a thickness of λ 0 /32 at the center frequency of 5.92 GHz corresponding to 10dB absorption bandwidth. The current and electromagnetic field distributions have been analyzed to understand the absorption mechanism of the absorber. An array of the proposed absorber has been fabricated and experimentally tested for various polarization angles and oblique incidences of electromagnetic wave. The proposed absorber is well suited for surveillance and other defense applications.

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

Cited by 50 publications

References 29 publications

High-Q Optical Sensors for Chemical and Biological Analysis

High-Q Optical Sensors for Chemical and Biological Analysis

Quantum dot focal plane array with plasmonic resonator

A Wideband Wide-Angle Ultra-Thin Metamaterial Microwave Absorber

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