341 citations · 643 across the 5 of their papers we have counts for
5 papers
Photoacoustic Tomography using a Michelson Interferometer with Quadrature Phase Detection
Rory W. Speirs, Alexis I. Bishop
We present a pressure sensor based on a Michelson interferometer, for use in photoacoustic tomography. Quadrature phase detection is employed allowing measurement at any point on t…
Re-sampling of inline holographic images for improved reconstruction resolution
S. G. Podorov, A. I. Bishop, D. M. Paganin +1
Digital holographic microscopy based on Gabor in-line holography is a well-known method to reconstruct both the amplitude and phase of small objects. To reconstruct the image of an…
Optical microrheology using rotating laser-trapped particles
Alexis I. Bishop, Timo A. Nieminen, Norman R. Heckenberg +1
We demonstrate an optical system that can apply and accurately measure the torque exerted by the trapping beam on a rotating birefringent probe particle. This allows the viscosity…
Optical application and measurement of torque on microparticles of isotropic nonabsorbing material
Alexis I. Bishop, Timo A. Nieminen, Norman R. Heckenberg +1
We show how it is possible to controllably rotate or align microscopic particles of isotropic nonabsorbing material in a TEM00 Gaussian beam trap, with simultaneous measurement of…
Numerical Modelling of Optical Trapping
T. A. Nieminen, H. Rubinsztein-Dunlop, N. R. Heckenberg +1
Optical trapping is a widely used technique, with many important applications in biology and metrology. Complete modelling of trapping requires calculation of optical forces, prima…