Results 51 to 60 of about 197,201 (273)

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

Creating the perfect plasmonic wave

Light: Science & Applications, 2022
Plasmonics can help to produce optical gratings with surprisingly high regularity and writing speed, surpassing mechanically ruled gratings in both aspects.
Günter Steinmeyer
doaj   +1 more source

Nonlinear Optical Effects [PDF]

, 1971
Third-harmonic generation in cholesteric liquid crystals, far-infrared generation by ultrashort pulses, and self-focusing of light in nonlinear media are taken as examples for illustration of nonlinear optical effects. Depending on the problems, different approximations are used in solving the nonlinear wave equations.
openaire   +3 more sources

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

High-order harmonics enhancement in laser-induced plasma

Scientific Reports, 2023
The methods of enhancement of the strong high-order harmonics of femtosecond pulses in laser-induced plasma are demonstrated. It comprises the application of the four techniques allowing the enhancement of harmonics in different spectral ranges.
Rashid A. Ganeev
doaj   +1 more source

Nonlinear photonic crystals near the supercollimation point

, 2008
We uncover a strong coupling between nonlinearity and diffraction in a photonic crystal at the supercollimation point. We show this is modeled by a nonlinear diffraction term in a nonlinear schroedinger type equation, in which the properties of solitons ...
Björn Maes, Gomez-Gardeñes, Jiang, John, John D. Joannopoulos, Kosaka, Lax, Lluis Torner, Marin Soljačić, Marklund, Notomi, Pushkarov, Pustai, Rakich, Salerno, Shin, Soljacic, Witzens, Xunya Jiang, Yablonovitch, Zhiyong Xu   +20 more
core   +1 more source

Temporal Trends in and Associations With Nonsteroidal Anti‐inflammatory Drug Prescription in Adult and Pediatric Patients With Inflammatory Bowel Disease

Arthritis Care &Research, EarlyView.
Objective Recent inflammatory bowel disease (IBD) treatment guidelines have recommended against nonsteroidal anti‐inflammatory drug (NSAID) use despite prevalent musculoskeletal symptoms and opioid overuse in this population. Given the discordance between changing national guidelines and potential clinical utility, we sought to assess national temporal
Adam S. Mayer, Rui Xiao, Andrew Grossman, Meenakshi Bewtra, Michael D. George, Pamela F. Weiss   +5 more
wiley   +1 more source

Impact of Tamm plasmon structures on fluorescence and optical nonlinearity of graphene quantum dots

Scientific Reports
Graphene Quantum Dots (GQDs) are crucial in biomedicine for sensitive biosensing and high-resolution bioimaging and in photonics for their nonlinear optical properties.
Hasana Jahan Elamkulavan, Nikhil Puthiya Purayil, Sanjay Subramaniam, Chandrasekharan Keloth   +3 more
doaj   +1 more source

Diffraction of a Gaussian beam near the beam waist

Journal of the European Optical Society-Rapid Publications, 2019
The behavior of the light field near the beam waist has attracted considerable attention due to the studies of the light spin-orbit interaction: it’s manifestation as well as potential applications.
Evelina A Bibikova, Nazar Al-wassiti, Nataliya D Kundikova   +2 more
doaj   +1 more source

Efficient generation of broadband MIR radiation by difference–frequency generation in LiGaS2 [PDF]

EPJ Web of Conferences, 2019
We report a surprisingly infrared (MIR) pulse generation in simultaneous interplay of intra-pulse self-phase-modulation and dispersion. broadband and efficient middle-LiGaS2 (LGS) by invoking a difference frequency generation,
Chen Bo-Han, Nagy Tamas, Baum Peter
doaj   +1 more source