University of Glasgow :: School of Physics and Astronomy :: Research :: Research Groups

At any one time there are about 15 of us in the Optics research group. We cover a wide spectrum, from blue-sky research to applied commercial development.

We are best known for our work on optical angular momentum (where light beams can spin microscopic objects) and our development of optical tweezers (which use laser beams to manipulate the microscopic world). We also study how tiny prisms and lenses can create strange optical transformations and how optical beams interact with cold atoms and gases.

Optical angular momentum

As they propagate, some light beams rotate hence carry angular momentum. When light strikes a particle its radiation pressure pushes it away, but the angular momentum spins it. We use this light to power miniature machines, make tests of quantum mechanics and improve communication systems.
Optical tweezers

Light from a laser pointer can move microscopic particles like individual cells and bacteria. We use computer controlled holograms to split a single laser into many beams each controlling a particle. Using high-speed cameras we watch, listen and through advanced interfaces feel the micro world.
Quantum optics

Spooky action at a distance is the essence of quantum mechanics, linking the properties of distant objects. Using holograms we measure the shape of individual particles of light (photons). These spooky photons create new opportunities in processing, communication and imaging.
Atom optics

We are investigating the interface of atoms with shaped light beams. In a magneto-optical trap we keep atoms at some 100 micro Kelvin in order to store optical quantum information in the atomic states and coherences.
MetaToys

We are mimicking a few of the visual properties of metamaterials using arrays of miniaturized lenses and prisms, which have many similarities with metamaterials. We call these metamaterials for light rays (METATOYs).