scispace - formally typeset
G

Gabriel Martínez-Niconoff

Researcher at National Institute of Astrophysics, Optics and Electronics

Publications -  45
Citations -  347

Gabriel Martínez-Niconoff is an academic researcher from National Institute of Astrophysics, Optics and Electronics. The author has contributed to research in topics: Diffraction & Curvature. The author has an hindex of 8, co-authored 44 publications receiving 325 citations.

Papers
More filters
Journal ArticleDOI

Impact of velocity distribution assumption on simplified laser speckle imaging equation

TL;DR: This study evaluated the use of two velocity distribution assumptions (Lorentzian- and Gaussian-based) to calculate speckle flow index (SFI) values and derived equations form the basis for simplified calculations of SFI values.
Journal ArticleDOI

Modulation of coherence and polarization using liquid crystal spatial light modulators.

TL;DR: In contrast to a similar technique analyzed by Shirai and Wolf, this method provides a wide range simultaneous modulation of coherence and polarization of electromagnetic fields, employing two crossed zero-twelve nematic liquid crystal spatial light modulators.
Journal ArticleDOI

The van Cittert-Zernike theorem for electromagnetic fields.

TL;DR: The van Cittert-Zernike theorem, well known for the scalar optical fields, is generalized for the case of vector electromagnetic fields and shows that the degree of coherence of the electromagnetic field produced by the completely incoherent vector source increases on propagation whereas thedegree of polarization remains unchanged.
Journal ArticleDOI

Coherent-mode representation of propagation-invariant fields

TL;DR: In this paper, the general coherent-mode structure of a propagation-invariant field is found as the solution of the differential equation for propagation of the coherent modes of said field.
Journal ArticleDOI

Simple correction factor for laser speckle imaging of flow dynamics

TL;DR: A new model expression for integrated speckle contrast is presented, which accounts not only for temporal integration but spatial integration, too, due to the finite size of the pixel of the CCD camera; as a result, it is found that a correction factor should be introduced to the measured speckel contrast to properly determine τ(C); otherwise, the measured blood's speed is overestimated.