OptFROG - Analytic signal spectrograms with optimized time–frequency resolution

authored by

Oliver Melchert, Bernhard Wilhelm Roth, Uwe Morgner, Ayhan Demircan

Abstract

A Python package for the calculation of spectrograms with optimized time and frequency resolution for application in the analysis of numerical simulations on ultrashort pulse propagation is presented. Gabor's uncertainty principle prevents both resolutions from being optimal simultaneously for a given window function employed in the underlying short-time Fourier analysis. Our aim is to yield a time–frequency representation of the input signal with marginals that represent the original intensities per unit time and frequency similarly well. As a use-case, we demonstrate the implemented functionality for the analysis of simulations on ultrashort pulse propagation in a nonlinear waveguide.

Organisation(s)

PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
Hannover Centre for Optical Technologies (HOT)
Institute of Quantum Optics

Type

Article

Journal

SoftwareX

Volume

10

Publication date

07.2019

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Software, Computer Science Applications

Electronic version(s)

https://doi.org/10.1016/j.softx.2019.100275 (Access: Open)