Results 41 to 50 of about 32,897 (303)

Strongly bound excitons in anatase TiO2 single crystals and nanoparticles

Nature Communications, 2017
Here the authors combine steady-state angle-resolved photoemission spectroscopy, ellipsometry and ultrafast two-dimensional ultraviolet spectroscopy to examine the role of many-body correlations in anatase TiO2, revealing the existence of strongly bound ...
E. Baldini, L. Chiodo, A. Dominguez, M. Palummo, S. Moser, M. Yazdi-Rizi, G. Auböck, B.P.P. Mallett, H. Berger, A. Magrez, C. Bernhard, M. Grioni, A. Rubio, M. Chergui   +13 more
doaj   +1 more source

Recent advances in ultrafast optical parametric oscillator frequency combs

, 2014
We discuss recent advances in the stabilization and application of femtosecond frequency combs based on optical parametric oscillators (OPOs) pumped by femtosecond lasers at 800 and 1060 nm.
Reid, Derryck T.; id_orcid, McCracken, Richard A.; id_orcid, Zhang, Zhaowei   +2 more
core   +1 more source

Power scaling of tunable, narrowband, non-resonant PPLN optical parametric oscillators

Journal of the European Optical Society-Rapid Publications
We review our recent achievements with narrowband, nanosecond, non-resonant optical parametric oscillators based on periodically-poled LiNbO3, which are pumped at 1064 nm and emit close to degeneracy in the near-IR part of the spectrum between 1860 and ...
Chen Weidong, Wang Li, Das Subhasis, Spindler Gerhard, Temel Tugba, Schirrmacher André, Divliansky Ivan B., Piotrowski Marcin, Mhibik Oussama, Büttner Edlef, Cui Chen, Murray Robert T., Zhang Ge, Petrov Valentin   +13 more
doaj   +1 more source

Compliant mechanical response of the ultrafast folding protein EnHD under force

Communications Physics, 2023
Exhibiting low-energy (un)folding barriers and fast kinetics, ultrafast folding proteins are enticing models to study protein dynamics. The authors use single molecule force spectroscopy AFM to capture the compliant behaviour hallmarking the dynamics of ...
Antonio Reifs, Irene Ruiz Ortiz, Amaia Ochandorena Saa, Jörg Schönfelder, David De Sancho, Victor Muñoz, Raul Perez-Jimenez   +6 more
doaj   +1 more source

Spectral Ghost Imaging for Ultrafast Spectroscopy

IEEE Photonics Journal, 2022
We experimentally demonstrate ghost imaging in the frequency domain based on frequency speckle patterns as references. Our method is suitable for measuring the spectrum of ultrafast signals with high repetition rates.
Shir Rabi, Sara Meir, Raphi Dror, Hamootal Duadi, Francesco Baldini, Francesco Chiavaioli, Moti Fridman   +6 more
doaj   +1 more source

High-sensitivity all-optical ultrafast spectroscopy of cold molecular beams [PDF]

, 2020
Made available in DSpace on 2020-06-26T03:04:39Z (GMT). No. of bitstreams: 2 4647.pdf: 23569 bytes, checksum: cd99ccd5633b9301811b235c866f47cf (MD5) license.txt: 4802 bytes, checksum: 58353f9dd6876860dd5221f3d7872a95 (MD5) Previous issue date: 26Time-
Kowzan, Grzegorz
core  

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Frequency domain interferometry for measuring ultrafast refractive index modulation and surface deformation

Advances in Physics: X, 2022
Ultrafast optical spectroscopy delivers unparalleled insights into the dynamic response of photoactive materials, including semiconducting, photonic and phase-change materials.
Ronnie R. Tamming, Justin M. Hodgkiss, Kai Chen   +2 more
doaj   +1 more source

Communication: interfacial water structure revealed by ultrafast two-dimensional surface vibrational spectroscopy [PDF]

, 2011
Knowledge of the interfacial water structure is essential for a basic understanding of the many environmental, technological, and biophysical systems in which aqueous interfaces appear.
Zhen Zhang, Lukasz Piatkowski, Mischa Bonn, Piatkowski, L., Huib J. Bakker, Bonn, M., Bakker, H.J., Zhang, Z.   +7 more
core   +1 more source

Ultrafast spectroscopy: timing is everything [PDF]

Nature Methods, 2007
Two groups present applications of two-dimensional optical spectroscopic methods for investigating dynamic biological processes on pico- to femtosecond timescales.
openaire   +2 more sources