Results 91 to 100 of about 32,897 (303)

Adaptively shaped advanced ultrafast laser sources

open access: yes, 2011
The aim of the work presented in this thesis is to investigate adaptively shaped advanced ultrafast laser sources in the near-(NIR) and the mid-infrared (MIR) regimes.
Daga, Nikita K., Daga, Nikita K
core  

Ultrafast-nonlinear ultraviolet pulse modulation in an AlInGaN polariton waveguide operating up to room temperature

open access: yes, 2020
Ultrafast nonlinear photonics enables a host of applications in advanced on-chip spectroscopy and information processing. These rely on a strong intensity dependent (nonlinear) refractive index capable of modulating optical pulses on sub-picosecond ...
Ruggero P. A. Emmanuele (17518134)   +11 more
core   +1 more source

Direct evidence of ultrafast energy delocalization in a strongly coupled organic microcavity probed by two-dimensional electronic spectroscopy

open access: yes, 2022
Two-Dimensional Electronic Spectroscopy reveals an ultrafast energy delocalization between 2μm distanced donor/acceptor molecules confined in a microcavity. This mechanism is promoted by the formation of hybrid-polariton states that induces a coupling in
Russo, Mattia   +8 more
core   +1 more source

A multipurpose setup for ultrafast XUV spectroscopies

open access: yesReview of Scientific Instruments
A tabletop setup for ultrafast x-ray ultraviolet (XUV) magnetic scattering and molecular spectroscopy has been developed at the Laboratory of Quantum Optics at the University of Nova Gorica. This system provides XUV light in a spectral range allowing the study of M-absorption edges in pure transition metals and their alloys, with a pulse duration of 35 
Arun Ravindran   +10 more
openaire   +3 more sources

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Single Crystals of Perylene Diimide‐Based Two‐Dimensional Covalent Organic Frameworks

open access: yesAdvanced Materials, EarlyView.
Synthesizing extended crystals of two‐dimensional covalent organic frameworks (2D COFs) has remained a major challenge. Here, we report a high‐temperature double‐modulator strategy that provides access to new perylene diimide (PDI)‐based COFs with crystal sizes of up to 50 µm.
Ling Zhang   +12 more
wiley   +1 more source

Broadband cavity-enhanced ultrafast spectroscopy

open access: yes, 2021
Broadband ultrafast optical spectroscopy methods, such as transient absorption spectroscopy and 2D spectroscopy, are widely used to study molecular dynamics.
Neomi Lewis (14383311)   +3 more
core   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

open access: yesAdvanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela   +4 more
wiley   +1 more source

Achieving surface sensitivity in ultrafast XUV spectroscopy [PDF]

open access: yes, 2019
Made available in DSpace on 2019-07-15T22:16:37Z (GMT). No. of bitstreams: 2 3845.pdf: 14954 bytes, checksum: 3df0d5821501806c467341c6abbbd72a (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 2019-06 ...
Baker, Robert., Baker, Robert
core   +1 more source

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