scholarly journals Nonlinear Optics And Surface Science

1985 ◽  
Vol 51 ◽  
Author(s):  
Y. R. Shen

ABSTRACTThe recent status of applications of nonlinear optics to surface science is reviewed. The basic theory of wave mixing on a surface layer, and the possibility of using various nonlinear optical processes for surface probing are briefly discussed. Emphasis is on surface second harmonic generation, which is shown with many illustrations to be a rather unique and versatile tool for surface studies.

Author(s):  
Tianhui Wu ◽  
Xingxing Jiang ◽  
Chao Wu ◽  
Hongyuan Sha ◽  
Zujian Wang ◽  
...  

Efficient mid-infrared (mid-IR) nonlinear optical (NLO) crystals are highly desirable, but it remains extremely challenging to simultaneously achieve strong second harmonic generation (SHG) response, large optical bandgap, and wide optical...


2017 ◽  
Vol 41 (4) ◽  
pp. 1744-1754 ◽  
Author(s):  
Leonardo R. Almeida ◽  
Murilo M. Anjos ◽  
Gabriela C. Ribeiro ◽  
Clodoaldo Valverde ◽  
Daniel F. S. Machado ◽  
...  

The interest for novel chalcone-based materials in nonlinear optics is dependent on strong second harmonic generation in organic systems.


1994 ◽  
Vol 35 (4) ◽  
pp. 1622-1633 ◽  
Author(s):  
Gang Bao ◽  
David C. Dobson

1995 ◽  
Vol 413 ◽  
Author(s):  
G. I. Stegeman ◽  
M. JÄger ◽  
A. Otomo ◽  
W. Brinker ◽  
S. Yilmaz ◽  
...  

ABSTRACTThe phenomenon of second harmonic generation has been studied from the earliest days of nonlinear optics.[l] To date the most impressive results in terms of conversion efficiency for as low an input power as possible have been obtained in channel waveguides made from inorganic materials.[2] However, when their second order nonlinearities (10s of pm/V) are compared with those of organic materials (10s → 100s pmn/V), it is clear that organic materials should eventually produce much better harmonic conversion efficiencies. [3]


2018 ◽  
Vol 27 (01) ◽  
pp. 1850003 ◽  
Author(s):  
Mohamadreza Soltani

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.


RSC Advances ◽  
2017 ◽  
Vol 7 (82) ◽  
pp. 52125-52132 ◽  
Author(s):  
Xuyang Zhou ◽  
Yang Chen ◽  
Jian Su ◽  
Xiaohe Tian ◽  
Yonghuang Luo ◽  
...  

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.


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