Results 31 to 40 of about 24,405 (168)

Research on Nonlinear Absorption Effect in KDP and 70%-DKDP Crystals

Crystals, 2017
Nonlinear optical absorption effect in KDP and 70%-DKDP crystals, which were grown by the conventional temperature cooling method, was systematically studied using picosecond pulse laser excitation. Using open aperture Z-scan measurements, the dependence
Duanliang Wang, Shenglai Wang, Jiyang Wang, Chuanying Shen, Weidong Li, Pingping Huang, Hui Liu, Robert I. Boughton   +7 more
doaj   +1 more source

Nonlinear wavefront engineering with metasurface decorated quartz crystal

Nanophotonics, 2021
In linear optical processes, compact and effective wavefront shaping techniques have been developed with the artificially engineered materials and devices in the past decades.
Mao Ningbin, Tang Yutao, Jin Mingke, Zhang Guanqing, Li Yang, Zhang Xuecai, Hu Zixian, Tang Wenhao, Chen Yu, Liu Xuan, Li Kingfai, Cheah Kokwai, Li Guixin   +12 more
doaj   +1 more source

Effect of NaCl on the properties of sulphamic acid single crystals

Heliyon, 2019
Single crystals of pure and NaCl doped sulphamic acid (SA) were grown by slow evaporation method at room temperature. The lattice parameters and structure were determined by using single crystal and powder X-ray diffraction analyses.
J. Arumugam, N. Suresh, M. Selvapandiyan, S. Sudhakar, M. Prasath   +4 more
doaj   +1 more source

Thermo-Mechanical Characterization of the Orthorhombic Nonlinear Optical Crystal PbGa₂GeSe₆

Photonics
Linear thermal expansion in the 70–350 K range and nanohardness and Young’s modulus at room temperature are measured for the newly developed quaternary nonlinear optical crystal PbGa2GeSe6 applicable in the mid-IR part of the spectrum (3–25 µm).
Michael A. Susner, Jonathan T. Goldstein, Ginka K. Exner, Aleksandar V. Grigorov, Ryan Siebenaller, Kentaro Miyata, Valentin Petrov   +6 more
doaj   +1 more source

Solitons in quadratic nonlinear photonic crystals [PDF]

Physical Review E, 2001
We study solitons in one-dimensional quadratic nonlinear photonic crystals with modulation of both the linear and nonlinear susceptibilities. We derive averaged equations that include induced cubic nonlinearities and numerically find previously unknown soliton families.
Corney, J. F., Bang, O.
openaire   +6 more sources

Cascaded Third-Harmonic Generation in Optically Induced 3D Nonlinear Photonic Crystals

Photonics
Nonlinear photonic crystals with 3D orthorhombic lattice structures were fabricated using the femtosecond laser-poling technique in ferroelectric Sr0.28Ba0.72Nb2O6 (SBN) crystals.
Tianxiang Xu, Sen Wang, Jing Zeng, Dawei Liu, Ruwei Zhao, Yuming Yao, Yuhao Zhao, Hui Zhao, Tiefeng Xu, Yan Sheng   +9 more
doaj   +1 more source

Broadband, Continuous-Wave, Mid-Infrared Generation Based on ASE Fiber Source

Photonics, 2022
The research reports broadband, continuous-wave (CW), mid-infrared generation based on an optical parametric oscillator (OPO), pumped by an amplified spontaneous emission (ASE) fiber source.
Kaifeng Wang, Xiao Li, Peng Wang, Weihong Hua, Zefeng Wang, Kai Han   +5 more
doaj   +1 more source

Double-Peaked Mid-Infrared Generation Based on Intracavity Difference Frequency Generation

Applied Sciences, 2022
It was reported that a double-peaked mid-infrared laser was generated based on an intracavity difference frequency generation (DFG). The double-peaked pump source was achieved by suppressing the intensity at the central wavelength of the pump source. The
Kaifeng Wang, Xiao Li, Peng Wang, Meng Wang, Weihong Hua, Kai Han, Zefeng Wang   +6 more
doaj   +1 more source

Nonlinear frequency conversion in optical nanoantennas and metasurfaces: materials evolution and fabrication

Opto-Electronic Advances, 2018
Nonlinear frequency conversion is one of the most fundamental processes in nonlinear optics. It has a wide range of applications in our daily lives, including novel light sources, sensing, and information processing.
Rahmani Mohsen, Leo Giuseppe, Brener Igal, Zayats Anatoly V., Maier Stefan A., Angelis Costantino De, Tan Hoe, Gili Valerio Flavio, Karouta Fouad, Oulton Rupert, Vora Kaushal, Lysevych Mykhaylo, Staude Isabelle, Xu Lei, Miroshnichenko Andrey E., Jagadish Chennupati, Neshev Dragomir N.   +16 more
doaj   +1 more source

Nonlinear Electro-Hydrodynamics of Liquid Crystals

Journal of Experimental and Theoretical Physics, 2023
We present nonlinear dynamic equations for nematic and smecticAliquid crystals in the presence of an alternating electric field and explain their derivation in detail. The local electric field acting in any liquid-crystalline system is expressed as a sum of external electric field, the fields originating from feedback of liquid crystal order parameter,
Pikina, E. S., Kats, E. I., Muratov, A. R., Lebedev, V. V.   +3 more
openaire   +2 more sources