Now showing items 1-10 of 453
Solar-blind AlGaN-based Schottky photodiodes with low noise and high detectivity
(American Institute of Physics, 2002)
We report on the design, fabrication, and characterization of solar-blind Schottky photodiodes with low noise and high detectivity. The devices were fabricated on n-/n+ AlGaN/GaN heterostructures using a microwave compatible ...
45-GHz bandwidth-efficiency resonant-cavity-enhanced ITO-Schottky photodiodes
High-speed Schottky photodiodes suffer from low efficiency mainly due to the thin absorption layers and the semitransparent Schottky-contact metals. We have designed, fabricated and characterized high-speed and high-efficiency ...
High-speed GaAs-based resonant-cavity-enhanced 1.3 μm photodetector
(American Institute of Physics., 2000)
We report GaAs-based high-speed, resonant-cavity-enhanced, Schottky barrier internal photoemission photodiodes operating at 1.3 μm. The devices were fabricated by using a microwave-compatible fabrication process. Resonance ...
Multiple slow waves and relevant transverse transmission and confinement in chirped photonic crystals
(OSA Publishing, 2014-09-02)
The dispersion properties of rod-type chirped photonic crystals (PhCs) and non-channeled transmission in the direction of the variation of structural parameters from one cell of such a PhC to another are studied. Two types ...
High-performance ITO-AlAs/GaAs based resonant cavity enhanced Schottky photodiodes
The fabrication of ITO (indium tin oxide)-AlAs-based resonant cavity enhanced Schottky photodiodes was examined. The device structure was designed to achieve a low-loss cavity around a 840 nm optical communication window. ...
High-speed widely-tunable >90% quantum-efficiency resonant cavity enhanced p-i-n photodiodes
Widely-tunable high-speed resonant cavity enhanced p-i-n photodiodes were designed, fabricated and tested for operation around 820 nm. The structure was grown by solid-source MBE on GaAs substrates and features high-reflectivity ...
Extraordinary grating-coupled microwave transmission through a subwavelength annular aperture
(Optical Society of America, 2005-03-07)
We studied coupling phenomena between surface plasmons and electromagnetic waves in the microwave spectrum using circular apertures surrounded by array of grooves. We first present experimental and theoretical results of ...
High-speed high-efficiency resonant cavity enhanced photodiodes
(Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, United States, 1999)
In this paper, we review our research efforts on RCE high-speed high-efficiency p-i-n and Schottky photodiodes. Using a microwave compatible planar fabrication process, we have designed and fabricated GaAs based RCE ...
A new detection method for capacitive micromachined ultrasonic transducers
Capacitive micromachined ultrasonic transducers (cMUT) have become an alternative to piezoelectric transducers in the past few years. They usually consist of many small membranes all in parallel. In this work we report a ...
Guest editorial: Selected papers from the 2nd mediterranean conference on nanophotonics
[No abstract available]