Results 1 to 10 of about 51,598 (120)
Frontiers in Microbiology, 2021 We developed an ultrafast one-step RT-qPCR assay for SARS-CoV-2 detection, which can be completed in only 30 min on benchtop Bio-Rad CFX96. The assay significantly reduces the running time of conventional RT-qPCR: reduced RT step from 10 to 1 min, and ...
Jadranka Milosevic +7 more
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Evolving Stark Effect During Growth of Perovskite Nanocrystals Measured Using Transient Absorption
Frontiers in Chemistry, 2020 Methylammonium lead triiodide (MAPbI3) nanocrystals (NCs) are emerging materials for a range of optoelectronic applications. Photophysical characterization is typically limited to structurally stable NCs owing to the long timescales required for many ...
James C. Sadighian +5 more
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Ultrafast electron cooling in an expanding ultracold plasma
Nature Communications, 2021 Here the authors report on the creation of ultracold plasma by photoionization of a Bose-Einstein condensate with a femtosecond laser pulse. The experimental setup grants direct access to the electron temperature and reveals ultrafast cooling of ...
Tobias Kroker +5 more
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Electron Dynamics in Anatase TiO2 Nanoparticles by Ultrafast Broadband Deep-Ultraviolet Spectroscopy [PDF]
EPJ Web of Conferences, 2019 The optical bandgap of anatase TiO2 nanoparticles is dominated by bulk absorption bands in the deep-ultraviolet due to strongly bound excitons. These spectral features can be utilized as a sensitive probe of carrier and lattice dynamics inside the TiO2 ...
Baldini Edoardo +4 more
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2.76–3.98 μm picosecond mid-infrared optical parametric generation in a muti-grating MgO: PPLN
Frontiers in Physics, 2022 The high repetition rate, widely tunable, picosecond mid-infrared laser plays an important role in various fields. In this paper, the single-pass optical parametric generator (OPG) pumped by Yb-fiber laser based on MgO: PPLN is proposed.
Bowen Li +5 more
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All-Optical Modulation and Ultrafast Switching in MWIR with Sub-Wavelength Structured Silicon
Applied Sciences, 2019 We investigated and optimised the performance of the all-optical reflective modulation of the Mid-Wave Infrared (MWIR) signal by means of the optically-pumped sub-wavelength-structured optical membranes made of silicon.
Rihan Wu +3 more
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Nanophotonics, 2020 Coherent control is an ingenious tactic to steer a system to a desired optimal state by tailoring the phase of an incident ultrashort laser pulse. A relevant process is the two-photon–induced photoluminescence (TPPL) of nanoantennas, as it constitutes a ...
Accanto Nicolò +4 more
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Real-Time Megapixel Electro-Optical Imaging of THz Beams with Probe Power Normalization
Sensors, 2022 In this work, we present a simple method to improve the spatial uniformity of two-dimensional electro-optical imaging of terahertz (THz) beams. In this system, near-field THz images are captured by fully illuminating a sample using conventional optical ...
François Blanchard +2 more
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Terahertz Emission and Ultrafast Carrier Dynamics of Ar-Ion Implanted Cu(In,Ga)Se2 Thin Films
Crystals, 2021 We investigated THz emission from Ar-ion-implanted Cu(In,Ga)Se2 (CIGS) films. THz radiation from the CIGS films increases as the density of implanted Ar ions increases.
Chul Kang +6 more
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Imaging acoustic waves in microscopic wedges
New Journal of Physics, 2014 Using an ultrafast optical technique we image near-gigahertz flexural acoustic waves propagating in a thin gold wedge deposited on an ultrathin silicon nitride slab.
Motonobu Tomoda +6 more
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