Now showing items 1-10 of 76
Integrated single- and two-photon light sheet microscopy using accelerating beams
(2017-05-03) - Journal article,
We demonstrate the first light sheet microscope using propagation invariant, accelerating Airy beams that operates both in single- and two-photon modes. The use of the Airy beam permits us to develop an ultra compact, high ...
An organic vortex laser
(2018-03-27) - Journal article,
Optical vortex beams are at the heart of a number of novel researchdirections, both as carriers of information and for the investigation of optical activity and chiral molecules. Optical vortex beams are beams of light ...
Modal beam splitter : determination of the transversal components of an electromagnetic light field
(2017-08-22) - Journal article,
The transversal profile of beams can always be defined as a superposition of orthogonal fields, such as optical eigenmodes. Here, we describe a generic method to separate the individual components in a laser beam and map ...
Shaping the light transmission through a multimode optical fibre : complex transformation analysis and applications in biophotonics
(2011-09-14) - Journal article,
We present a powerful approach towards full understanding of laser light propagation through multimode optical fibres and control of the light at the fibre output. Transmission of light within a multimode fibre introduces ...
Making the most of interference : speckle metrology and its application to cold atoms
(2017-07-24) - Conference item,
Speckle patterns result from the interference of multiple reflections in disordered media. This is regarded as a randomization process which destroys information contained within the initial light beam and is deleterious ...
Optical spectroscopic analysis for the discrimination of Extra-Virgin Olive Oil
(2016-11) - Journal article,
We demonstrate the ability to discriminate between five brands of commercially available extra-virgin olive oil (EVOO) using Raman spectroscopy or fluorescence spectroscopy. Data was taken on both a ‘bulk optics’ free space ...
Code underpinning - Modal beam splitter: determination of the transversal components of an electromagnetic light field
(University of St Andrews, 2017) - Software,
Mathematica code simulating the mode splitting using the optical eigenmode method.
Random super-prism wavelength meter
(2014-01-01) - Journal article,
The speckle pattern arising from a thin random, disordered scatterer may be used to detect the transversal mode of an incident beam. On the other hand, speckle patterns originating from meter-long multimode fibers can be ...
Rotation of two trapped microparticles in vacuum : observation of optically mediated parametric resonances
(2015-10-15) - Journal article,
We demonstrate trapping and rotation of two mesoscopic particles in vacuum using a spatial-light-modulator-based approach to trap more than one particle, induce controlled rotation of individual particles, and mediate ...
Coherent control of plasmonic nanoantennas using optical eigenmodes
(2013-05-09) - Journal article,
The last decade has seen subwavelength focusing of the electromagnetic field in the proximity of nanoplasmonic structures with various designs. However, a shared issue is the spatial confinement of the field, which is ...