Results 41 to 50 of about 40,871 (163)

Second harmonic generation in metasurfaces with multipole resonant coupling

Nanophotonics, 2020
We report on the numerical demonstration of enhanced second harmonic generation (SHG) originating from collective resonances in plasmonic nanoparticle arrays.
Han Aoxue, Dineen Colm, Babicheva Viktoriia E., Moloney Jerome V.   +3 more
doaj   +1 more source

Second harmonic generation in monolithic gallium phosphide metasurfaces

Nanophotonics
Gallium phosphide (GaP) offers unique opportunities for nonlinear and quantum nanophotonics due to its wide optical transparency range, high second-order nonlinear susceptibility, and the possibility to tailor the nonlinear response by a suitable choice ...
Yang Muyi, Weissflog Maximilian A., Fedorova Zlata, Barreda Angela I., Börner Stefan, Eilenberger Falk, Pertsch Thomas, Staude Isabelle   +7 more
doaj   +1 more source

- Second-Harmonic Generation [PDF]

, 2016
  +6 more sources

Quasi-BICs enhanced second harmonic generation from WSe2 monolayer

Nanophotonics
Quasi-bound states in the continuum (quasi-BICs) offer unique advantages in enhancing nonlinear optical processes and advancing the development of active optical devices.
Ren Peiwen, Huang Zhuo, Luo Song, Liu Jia, Dong Xiaoxiang, Zhang Hua, Li Jianfeng, Yang Zhilin   +7 more
doaj   +1 more source

X-Ray Second Harmonic Generation

Physical Review Letters, 2014
We report clear experimental evidence for second harmonic generation at hard x-ray wavelengths. Using a 1.7 Å pumping beam generated by a free electron laser, we observe second harmonic generation in diamond. The generated second harmonic is of order 10 times the background radiation, scales quadratically with pump pulse energy, and is generated over a
Shwartz, S., Fuchs, M., Hastings, J. B., Inubushi, Y., Ishikawa, T., Katayama, T., Reis, D. A., Sato, T., Tono, K., Yabashi, M., Yudovich, S., Harris, S. E.   +11 more
openaire   +3 more sources

Silencing the second harmonic generation from plasmonic nanodimers: A comprehensive discussion

Beilstein Journal of Nanotechnology, 2018
The silencing of the second harmonic generation process from plasmonic nanostructures corresponds to the limited far-field second harmonic radiation despite the huge fundamental electric field enhancement in the interstice between two plasmonic ...
Jérémy Butet, Gabriel D. Bernasconi, Olivier J. F. Martin   +2 more
doaj   +1 more source

Interferometric second harmonic generation microscopy

Optics Express, 2004
We describe a novel second harmonic generation (SHG) microscope that employs heterodyne detection by interfering the epi directed SHG from a sample with SHG from a reference crystal. In addition, the microscope provides complementary reflectance information based on optical coherence microscopy (OCM).
Siavash, Yazdanfar, Lily, Laiho, Peter, So   +2 more
openaire   +2 more sources

On-chip polarization rotator for type I second harmonic generation

APL Photonics, 2019
We demonstrate a polarization rotator integrated at the output of a GaAs waveguide producing type I second harmonic generation (SHG). Form-birefringent phase matching between the pump fundamental transverse electric (TE) mode near 2.0 µm wavelength and ...
Eric J. Stanton, Lin Chang, Weiqiang Xie, Aditya Malik, Jon Peters, Jeff Chiles, Nima Nader, Gabriele Navickaite, Davide Sacchetto, Michael Zervas, Kartik Srinivasan, John E. Bowers, Scott B. Papp, Sae Woo Nam, Richard P. Mirin   +14 more
doaj   +1 more source

Second harmonic generation microscopy in zebrafish [PDF]

, 2016
Modern optical imaging has progressed rapidly with the ability to noninvasively image cellular and subcellular phenomena with high spatial and temporal resolution. In particular, emerging techniques such as second harmonic generation (SHG) microscopy can allow for the monitoring of intrinsic contrast, such as that from collagen, in live and fixed ...
D C, LeBert, J M, Squirrell, A, Huttenlocher, K W, Eliceiri   +3 more
openaire   +2 more sources

Second-harmonic generation within a random fiber laser

High Power Laser Science and Engineering
Optical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve.
Yousi Yang, Dan Li, Pei Li, Guohao Fu, Tiancheng Qi, Yijie Zhang, Ping Yan, Mali Gong, Qirong Xiao   +8 more
doaj   +1 more source