Open AccessSpatio-spectral characterization of broadband fields using multispectral imaging
Author(s) -
C. Dorrer,
Seung-Whan Bahk
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.033387
Subject(s) - optics , multispectral image , interferometry , wavefront , apodization , broadband , amplitude , strehl ratio , phase (matter) , spatial frequency , physics , materials science , remote sensing , geology , quantum mechanics
Spatio-temporal coupling in the field of ultrashort optical pulses is a technical enabler for applications but can result in detrimental effects such as increased on-target pulse duration and decreased intensity. Spectrally resolved spatial-phase measurements of a broadband field are demonstrated using a custom multispectral camera combined with two different wavefront sensors: a multilateral spatial shearing interferometer based on an amplitude checkerboard mask and an apodized imaged Hartmann sensor. The spatially and spectrally resolved phase is processed to quantify the commonly occurring pulse-front tilt and radial group delay, which are experimentally found to be in good agreement with models.