Advanced Technology Institute, University of Surrey

w: http://www.surrey.ac.uk/ati/photonics/

The Photonics Group aims to be at the forefront of both basic science and technological advances in the area of light-matter interactions. We work on: Silicon Photonics; III-V Semiconductor Emittor and Detector Physics; Ultrafast Dynamics and Spintronics.The electronic and optical properties of 'designer semiconductors' are engineered on the length scale of an electron or photon wavelength. We investigate nanoscale structures for squeezing electrons to the point where their wave nature produces interesting effects (from quantum wells to quantum dots), and microscale structures for controlling light on a wavelength-scale (microcavities and vertical-cavity lasers). Just as controlling the motion of electrons and photons in tiny spaces has lead us to exciting new phenomena, control over the motion on very short time scales is proving just as fruitful. We are also active in the emerging area of spintronics where we control the spin of electrons and photons. Major advances have been made by the group in measuring the energy bands of key 'photonic' semiconductors, and then in designing, characterising and optimising optoelectronic devices. Semiconductor lasers employing strained layers, first proposed at Surrey, are now ubiquitous in the industry. A Surrey speciality is the use of hydrostatic pressure as a diagnostic tool to vary the lattice constant of crystals in a controlled way, mimicking the effect of changing composition in a single device. As well as high performance the other main technological drivers are low cost or high efficiency. We are developing new silicon-based devices for cheap optical information transmission and manipulation. High efficiency emitters are needed for energy saving and long-life displays and lighting.

Advanced Technology Institute is part of University of Surrey.

Advanced Technology Institute works (or has previously worked) with Surrey III V Semiconductor Emitter and Detector Physics, Surrey Silicon Photonics and Surrey Ultrafast Dynamics and Spintronics.

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