Results 111 to 120 of about 25,039 (305)
Single ion fluorescence excited with a single mode of an UV frequency comb
Nature Communications, 2017 Frequency combs are useful tools in high precision measurement including atomic transitions and atomic clocks. Here the authors demonstrate direct frequency comb spectroscopy to shorter wavelengths by probing a transition frequency in a trapped Mg+ ion ...
Akira Ozawa +5 more
doaj +1 more source
Comb-resolved spectroscopy with immersion grating in long-wave infrared
, 2018 We have developed a dispersive spectrometer using a compact immersion grating for direct frequency comb spectroscopy in the long-wave infrared region of 8-10 {\mu}m.
Jun Ye (346649) +4 more
core +1 more source
Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors
Advanced Intelligent Systems, EarlyView.We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley +1 more source
A chip-based optoelectronic-oscillator frequency comb
eLightMicroresonator-based Kerr frequency combs (“Kerr microcombs”) constitute chip-scale frequency combs of broad spectral bandwidth and repetition rate ranging from gigahertz to terahertz.
Jinbao Long +16 more
doaj +1 more source
Comparison of Fiber-Based Frequency Comb and Ti:Sapphire-Based Frequency Comb
Journal of the Optical Society of Korea, 2007 We compare two optical frequency combs, one of which is based on a Ti:sapphire femtosecond laser and the other is based on a mode-locked erbium-doped fiber laser. The comparison is performed by measuring an optical frequency standard with these two combs simultaneously. The two frequency measurements agree within 2.2 Hz.
Won-Kyu Lee +6 more
openaire +2 more sources
Optical injection locking can be used to isolate and amplify individual comb modes from an optical frequency comb (OFC). However, it has been observed that for narrow spaced OFCs (e.g.
Wu, D.S., Slavík, R., Richardson, D.J.
core +1 more source
Comb-based photonic neural population for parallel and nonlinear processing
, 2021 It is believed that neural information representation and processing relies on the neural population instead of a single neuron. In neuromorphic photonics, photonic neurons in the form of nonlinear responses have been extensively studied in single ...
Bowen Ma (10653939) +2 more
core +1 more source
American Journal of Botany, EarlyView.Abstract Premise Since its emergence in the Mesozoic, Sequoia (Cupressaceae) has been considered to possess conserved leaf morphology. However, recent studies have shown that the leaves of extant S. sempervirens become smaller, with a scale form, with increasing tree height.
Shun Ikeda, Arata Momohara
wiley +1 more source
International Journal of Metrology and Quality Engineering, 2017 The appearance of the frequency comb technology, awarded the Nobel Prize in Physics 2005, has enormously revolutionized the metrology of optical frequencies, eliminating the need for complicated frequency chains.
Samoudi Bousselham
doaj +1 more source
, 2020 We developed a frequency-domain model describing optical frequency-comb generation in optical resonators with second- and third-order nonlinearities. Compared with time-domain models, our model in principle allows one to express the cavity dispersion ...
Enxu Zhu (14406096) +2 more
core +1 more source