LARGE NONLINEAR OPTICAL COEFFICIENT AND PHASE MATCHED SECOND HARMONIC GENERATION IN LiIO3

1969 ◽  
Vol 14 (5) ◽  
pp. 154-156 ◽  
Author(s):  
G. Nath ◽  
S. Haussühl
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Coefficient ◽  
Nonlinear Optical Coefficient

Second Harmonic Generation Properties of RbTiOPO4 Crystal

2010 ◽  
Vol 663-665 ◽  
pp. 373-376
Author(s):  
Yong Guang Zhao ◽  
Zheng Ping Wang ◽  
Xun Sun ◽  
Hao Hai Yu ◽  
Lei Guo ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Frequency Doubling ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Phase Matching ◽  
Angular Acceptance ◽  
Nonlinear Optical Coefficient

For RbTiOPO4 (RTP) crystal, the second harmonic generation (SHG) properties of 1064nm are discussed, including phase matching (PM) direction, effective nonlinear optical coefficient (deff), walk-off angle, and angular acceptance. For the frequency doubling of nano-second and pico-second Nd:YAG laser, the conversion efficiency of RTP crystal can reach 51 % and 57 %, respectively. The laser damage threshold of RTP crystal is measured.

Enhancement of second harmonic generation using a novel asymmetric metal–graphene–insulator–metal plasmonic waveguide

2018 ◽  
Vol 27 (01) ◽  
pp. 1850003 ◽  
Author(s):  
Mohamadreza Soltani
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Field Enhancement ◽  
The Other ◽  
Nonlinear Susceptibility ◽  
Optical Process ◽  
Large Enhancement ◽  
Nonlinear Optical Process

Here, we propose a novel plasmonic structure, called asymmetric plasmonic nanocavity grating (APNCG), which is shown to dramatically enhance nonlinear optical process of second harmonic generation (SHG). The proposed structure consists of two different metals on both sides of lithium niobate and a thin layer of graphene. By using two different metals the nonlinear susceptibility of the waveguide would be increased noticeably causing to increase SHG. On the other hand, it consists of two identical gratings on one side. By two identical gratings, the pump beam is coupled to two opposing SPP waves, which interfere with each other and result in SPP standing wave in the region between the two gratings. The distance between two gratings will be optimized to reach the highest SHG. It will be shown that by optimizing the geometry of proposed structure and using different metals, field enhancement in APNCG waveguides can result in large enhancement of SHG.

scholarly journals In situ second-harmonic generation mediated photodynamic therapy by micelles co-encapsulating coordination nanoparticle and photosensitizer

RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 52125-52132 ◽  
Author(s):  
Xuyang Zhou ◽  
Yang Chen ◽  
Jian Su ◽  
Xiaohe Tian ◽  
Yonghuang Luo ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Property A

NIR-PDT strategy was introduced by employing a nonlinear optical conveyor bearing strong second-harmonic generation (SHG) property. A biocompatible micellic system co-delivered the conveyor and photosensitizer for in situ NIR-PDT.

Ba2Ge2Te5: a ternary NLO-active telluride with unusual one-dimensional helical chains and giant second-harmonic-generation tensors

2021 ◽  
Author(s):  
Mao-Yin Ran ◽  
Zuju Ma ◽  
Xintao Wu ◽  
Hua Lin ◽  
Qi-Long Zhu
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Metal Chalcogenides ◽  
One Dimensional

The class of non-centrosymmetric (NCS) metal chalcogenides is the most favorable candidates for promising nonlinear optical (NLO) crystals in the infrared (IR) band. However, most research achievements pay them attention...

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