Increased Detectivity and Operation Temperature in Photonic Crystal Slab Quantum Well Photodetectors

S. Kalchmair; Roman Gansch; E. Mujagić; Sangtae Ahn; Peter Reininger; Gregor Lasser; A. M. Andrews; Hermann Detz; Tobias Zederbauer; W. Schrenk; G. Strasser

doi:10.1364/cleo_si.2012.cf1m.7

JOURNAL ARTICLE

Increased Detectivity and Operation Temperature in Photonic Crystal Slab Quantum Well Photodetectors

S. Kalchmair Roman Gansch E. Mujagić Sangtae Ahn Peter Reininger Gregor Lasser A. M. Andrews Hermann Detz Tobias Zederbauer W. Schrenk G. Strasser

Year: 2012 Vol: 93 Pages: CF1M.7-CF1M.7

DOI: 10.1364/cleo_si.2012.cf1m.7

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Abstract

Detectivity enhancement up to 20 times is achieved by fabricating a quantum well infrared photodetector as a photonic crystal slab. This enhancement is the combined effect of increased responsivity and noise current reduction. We report a peak detectivity of 2.6E10 cmHz1/2/W at 80 K and were able to operate the device up to 200 K.

Keywords:

Responsivity Photodetector Optoelectronics Photonic crystal Slab Materials science Quantum efficiency Specific detectivity Optics Noise (video) Photonics Infrared Physics Computer science

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Photonic and Optical Devices

Physical Sciences → Engineering → Electrical and Electronic Engineering

Photonic Crystals and Applications

Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics

Semiconductor Lasers and Optical Devices

Physical Sciences → Engineering → Electrical and Electronic Engineering

Increased Detectivity and Operation Temperature in Photonic Crystal Slab Quantum Well Photodetectors

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