Results 21 to 30 of about 9,289,923 (301)

Second-Harmonic Generation in Suspended AlGaAs Waveguides: A Comparative Study

Micromachines, 2020
Due to adjustable modal birefringence, suspended AlGaAs optical waveguides with submicron transverse sections can support phase-matched frequency mixing in the whole material transparency range, even close to the material bandgap, by tuning the width-to ...
Iännis Roland, Marco Ravaro, Stéphan Suffit, Pascal Filloux, Aristide Lemaître, Ivan Favero, Giuseppe Leo   +6 more
doaj   +1 more source

Label-free 3D visualization of cellular and tissue structures in intact muscle with second and third harmonic generation microscopy. [PDF]

, 2011
Second and Third Harmonic Generation (SHG and THG) microscopy is based on optical effects which are induced by specific inherent physical properties of a specimen.
Krombach Fritz, Rehberg, Markus, Fritz Krombach, Steffen Dietzel, Rehberg Markus, Pohl Ulrich, Dietzel, Steffen, Dietzel Steffen, Markus Rehberg, Ulrich Pohl, Pohl, Ulrich, Krombach, Fritz   +11 more
core   +2 more sources

SECOND HARMONIC GENERATION IN THE CENTROSYMMETRIC ANTIFERROMAGNET LaFeO3

Российский технологический журнал, 2017
The paper presents the results of experimental and theoretical studies of nonlinear optical properties of LaFeO3 thin film, which is antiferromagnetic and centrosymmetric, the latter provides prohibition of second harmonic generation in electric-dipole ...
A. M. Buryakov
doaj   +1 more source

An Investigation into the Role of Capping on Second Harmonic Generation from Nonlinear Organic Polymer and Guest-Host Thin Films by In-situ Poling [PDF]

, 2016
In attempts to fabricate thermally stable second-order nonlinear polymer thin films, we have investigated the second harmonic generation (SHG) from both nonlinear polymer and guest-host thin films. We have also investigated the role of capping on the SHG,
Ushasree, P.M., Ushasree, Palat, Szablewski, M.   +2 more
core   +1 more source

Spatiotemporal phase-matching in capillary high-harmonic generation [PDF]

, 2012
We present a simple phase-matching model that takes into account the full spatiotemporal nature of capillary high-harmonic generation. Spectra predicted from the model are compared to experimental results for a number of gases and are shown to reproduce ...
Rogers, Edward T.F., Praeger, M., Grant-Jacob, James, Stebbings, Sarah L., Frey, Jeremy G., de Paula, A., Rogers, E., de Paula, Ana M., Froud, Christopher A., Brocklesby, William S., Mills, Benjamin, Grant-Jacob, J., Praeger, Matthew, Mills, B., Frey, J., Stebbings, S., Froud, C., Brocklesby, W.   +17 more
core   +1 more source

Plasma-Grating-Enabled Second Harmonic Generation

Ultrafast Science
We present the experimental features of second harmonic emission from an air plasma coexcited by 2 ultrafast laser pulses and propose a theoretical model that describes the observed properties.
Shing Yiu Fu, Daopeng Yuan, X.-C. Zhang
doaj   +1 more source

Electric-field-induced second-harmonic generation

Opto-Electronic Advances
Second-harmonic generation (SHG) is a fundamental nonlinear optical process widely used in photonics; however, it is strictly forbidden in the bulk of centrosymmetric materials due to their inversion symmetry.
Hangkai Fan, Alexey Proskurin, Mingzhao Song, Andrey Bogdanov   +3 more
doaj   +1 more source

Nonlinear plasmonics: second-harmonic generation and multiphoton photoluminescence

PhotoniX, 2023
The study on the nonlinear optical responses arising from plasmonic nanoantennas, known as nonlinear plasmonics, has been massively investigated in recent years.
Jiyong Wang, Lei Zhang, Min Qiu
doaj   +1 more source

Efficient Enhancement of Second Harmonic Generation via Noninvasive Modulation

Applied Sciences, 2022
Second harmonic generation has been widely applied in various fields. High second harmonic intensity can facilitate optical imaging, signal sensing, and detection. Thus, enhancing the intensity of the second harmonic is a significant work.
Liqing Wu, Weiru Fan, Ziyang Chen, Jixiong Pu   +3 more
doaj   +1 more source

Second-harmonic generation from singular metasurfaces

, 2022
We present a theoretical study of second-harmonic generation from a singular metasurface. The singular metasurfaces strongly interact with the incident light, where the large field enhancement forms an intense surface polarization that generates the ...
Fan Yang (1413), Cristian Ciracì (14358156)   +1 more
core   +1 more source