activity
20142023
most citedPtychographic ultrafast pulse reconstruction

53 citations · 106 across the 7 of their papers we have counts for

collaborators

7 papers

physics.optics2023★ 5 cited

Calculating Point Spread Functions: Methods, Pitfalls and Solutions

Ratsimandresy Holinirina Dina Miora, Erich Rohwer, Martin Kielhorn +3

The knowledge of the exact structure of the optical system PSF enables a high-quality image reconstruction in fluorescence microscopy. Accurate PSF models account for the vector na…

physics.optics2020★ 18 cited

Generalized spectral phase-only time-domain ptychographic phase reconstruction applied in nonlinear microscopy

George Dwapanyin, Dirk Spangenberg, Alexander Heidt +4

Nonlinear microscopy has evolved over the last few decades to become a powerful tool for imaging and spectroscopic applications in biological sciences. In this study, IPIE, a n…

physics.optics2020★ 15 cited

Implementation of temporal ptychography algorithm, IPIE, for improved single-beam coherent anti-Stokes Raman scattering measurements

Ruan Viljoen, Pieter Neethling, Dirk Spangenberg +4

We present an improvement on the signal-to-background of single-beam coherent anti-Stokes Raman scattering (SB-CARS) spectroscopy measurements for systems employing ultrafast super…

eess.SP2019

Extending time-domain ptychography to generalized phase-only transfer functions

Dirk-Mathys Spangenberg, Erich Rohwer, Michael Brügmann +1

We extend the time-domain ptychographic iterative engine to generalized spectral phase-only transfer functions. The modified algorithm, iPIE, is described and its robustness is…

physics.optics2016

Measurement of complex supercontinuum light pulses using time domain ptychography

Alexander M. Heidt, Dirk-Mathys Spangenberg, Michael Brügmann +2

We demonstrate that time-domain ptychography, a recently introduced ultrafast pulse reconstruction modality, has properties ideally suited for the temporal characterization of comp…

physics.optics2016★ 15 cited

All optical implementation of a time-domain ptychographic pulse reconstruction set-up

Dirk-Mathys Spangenberg, Michael Brügmann, Erich Rohwer +1

An all optical implementation of pulse reconstruction using time-domain ptychography is demonstrated showing excellent results. Setup and reconstruction are easy to implement and a…