Open AccessUltra-short pulsed off-axis digital holography for imaging dynamic targets in highly scattering conditions
Author(s) -
Ali Ziaee,
Colin Dankwart,
Marco Minniti,
James D. Trolinger,
Derek DunnRankin
Publication year - 2017
Publication title -
applied optics
Language(s) - English
Resource type - Journals
ISSN - 0003-6935
DOI - 10.1364/ao.56.003736
Subject(s) - holography , optics , digital holography , materials science , scattering , noise (video) , spatial light modulator , spatial frequency , light scattering , stray light , physics , computer science , artificial intelligence , image (mathematics)
A single-shot digital holography system using an ultra-short pulsed laser is demonstrated to be very effective in suppressing the multiple-scattering noise associated with imaging dynamic targets in highly scattering environments, such as biological tissues and fuel injection systems. A planar off-axis reference wave configuration is used to generate a fixed carrier spatial frequency in the recorded holograms in order to separate coherent signal from incoherent noise in Fourier transformed holograms. The single-shot imaging system does not require averaging between multiple shots and can capture images of transient phenomena, such as the formation of diesel fuel injection sprays, and can overcome the problem of mechanical vibrations for recording holograms in industrial and laboratory environments.