Measuring morphological features using light-scattering spectroscopy and Fourier-domain low-coherence interferometry.

Measurement of angular distributions by use of low-coherence interferometry for light-scattering spectroscopy.

We present a novel interferometer for measuring angular distributions of backscattered light. The new system exploits a low-coherence source in a modified Michelson interferometer to provide depth resolution, as in optical coherence tomography, but includes an imaging system that permits the angle of the reference field to be varied in the detector plane by simple translation of an optical elem...

Fourier-domain low-coherence interferometry for light-scattering spectroscopy.

We present a novel method for obtaining depth-resolved spectra for determining scatterer size through elastic-scattering properties. Depth resolution is achieved with a white-light source in a Michelson interferometer with the mixed signal and reference fields dispersed by a spectrograph. The spectrum is Fourier transformed to yield the axial spatial cross correlation between the signal and ref...

Experimental calibration of a new angle-resolved low coherence interferometry system

We describe results of calibration experiments using a new angle-resolved low coherence interferometry system. Light scattered from a polystyrene microsphere sample are compared with Mie Theory predictions to determine the size of the particles. © 2003 Optical Society of America OCIS codes: Low coherence interferometry, light scattering spectroscopy.

Path Length Resolved Dynamic Light Scattering Measurements with Suppressed Influence of Optical Properties Using Phase Modulated Low Coherence Interferometry

Low-coherence heterodyne photon correlation spectroscopy.

Photon correlation spectroscopy (PCS) is routinely used to investigate the dynamics of colloidal particles undergoing Brownian motion. This technique is applicable to low-density colloidal suspensions in which the effects of multiple light scattering are minimal. We introduce a new low-coherence heterodyne PCS technique that allows direct investigation of colloidal suspensions of higher concent...