O
Oren Cohen
Researcher at Technion – Israel Institute of Technology
Publications - 276
Citations - 10563
Oren Cohen is an academic researcher from Technion – Israel Institute of Technology. The author has contributed to research in topics: High harmonic generation & Harmonics. The author has an hindex of 51, co-authored 269 publications receiving 9414 citations. Previous affiliations of Oren Cohen include Air Force Institute of Technology & University of Zagreb.
Papers
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Phase Retrieval with Application to Optical Imaging: A contemporary overview
TL;DR: The goal is to describe the current state of the art in this area, identify challenges, and suggest future directions and areas where signal processing methods can have a large impact on optical imaging and on the world of imaging at large.
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Solitons in nonlinear media with an infinite range of nonlocality: first observation of coherent elliptic solitons and of vortex-ring solitons.
TL;DR: In this paper, the authors present an experimental study on wave propagation in highly nonlocal optically nonlinear media, for which far-away boundary conditions significantly affect the evolution of localized beams.
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Spin angular momentum and tunable polarization in high-harmonic generation
TL;DR: In this paper, a simple method is demonstrated for high-order harmonic generation with fully controlled (linear, elliptical and circular) polarization, which potentially has a broad range of applications from ultrafast circular dichroism to attosecond quantum optics.
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Generation of Bright Phase-matched Circularly-polarized Extreme Ultraviolet High Harmonics
Ofer Kfir,Patrik Grychtol,Emrah Turgut,Ronny Knut,Ronny Knut,Dmitriy Zusin,Dimitar Popmintchev,Tenio Popmintchev,Hans T. Nembach,Hans T. Nembach,Justin M. Shaw,Avner Fleischer,Henry C. Kapteyn,Margaret M. Murnane,Oren Cohen +14 more
TL;DR: In this article, the first bright, phase-matched, extreme ultraviolet circularly-polarized high harmonics source was demonstrated for magnetic circular dichroism measurements at the M-shell absorption edges of Co.
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Phase matching of high harmonic generation in the soft and hard X-ray regions of the spectrum
Tenio Popmintchev,Ming-Chang Chen,Alon Bahabad,Michael Gerrity,Pavel Sidorenko,Oren Cohen,Ivan P. Christov,Margaret M. Murnane,Henry C. Kapteyn +8 more
TL;DR: The rapidly decreasing microscopic single-atom yield, predicted for harmonics driven by longer-wavelength lasers, is compensated macroscopically by an increased optimal pressure for phase matching and a rapidly decreasing reabsorption of the generated X-rays, making tabletop, fully coherent, multi-keV X-ray sources feasible.