Nonlinear refractive index larger than linear index: towards all-optical switching with terahertz bandwidth using epsilon-near-zero thin film

2015 ◽  
Author(s):  
M Zahirul Alam ◽  
Israel De Leon ◽  
Robert W Boyd
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Optical Switching ◽  
All Optical ◽  
Linear Index ◽  
All Optical Switching ◽  
Epsilon Near Zero

Study on All Optical Switching Effect of Excited State Proton Transfer Organic Molecule 3-Hydroxyflavone

2012 ◽  
Vol 482-484 ◽  
pp. 830-834
Author(s):  
Yang Xue Guo ◽  
Xiang Hong Kong ◽  
Wei Yang ◽  
Jia Jin Zheng
Keyword(s):  
Refractive Index ◽  
Excited State ◽  
Proton Transfer ◽  
Laser Beam ◽  
Nonlinear Refractive Index ◽  
Optical Switching ◽  
Switching Effect ◽  
All Optical ◽  
Excited State Proton Transfer ◽  
All Optical Switching

Abstract: We report the dependence of the all optical switching effect of 3-hydroxyflavone (3-HF) on the efficiency of excited state proton transfer (ESPT) using pump probe method. A cw probe laser beam of 632.8nm passing through the sample is switched off by a 35ps pulse pump laser beam of 355nm. We also measured the nonlinear refractive index of 3-HF in different solvents by using z-scan technique. The results show that the optical switching effect will be more obvious when the efficiency of excited state proton transfer is improved, while not proportional to the nonlinear refractive index of 3-HF.

Nanopattern enabled terahertz all-optical switching on vanadium dioxide thin film

2011 ◽  
Vol 98 (7) ◽  
pp. 071105 ◽  
Author(s):  
S. B. Choi ◽  
J. S. Kyoung ◽  
H. S. Kim ◽  
H. R. Park ◽  
D. J. Park ◽  
...  
Keyword(s):  
Thin Film ◽  
Vanadium Dioxide ◽  
Optical Switching ◽  
All Optical ◽  
All Optical Switching

scholarly journals Ultrafast all-optical switching enabled by epsilon-near-zero-tailored absorption in metal-insulator nanocavities

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Joel Kuttruff ◽  
Denis Garoli ◽  
Jonas Allerbeck ◽  
Roman Krahne ◽  
Antonio De Luca ◽  
...  
Keyword(s):  
Optical Switching ◽  
Metal Insulator ◽  
All Optical ◽  
All Optical Switching ◽  
Epsilon Near Zero

All optical switching in henna thin film

2013 ◽  
Vol 112 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Fryad Z. Henari ◽  
Khalil E. Jasim
Keyword(s):  
Thin Film ◽  
Optical Switching ◽  
All Optical ◽  
All Optical Switching

scholarly journals All-Optical Switching of an Epsilon-Near-Zero Plasmon in ITO

2020 ◽  
Author(s):  
Justus Bohn ◽  
Ting-Shan Luk ◽  
Craig Tollerton ◽  
Sam Hutchins ◽  
Igal Brener ◽  
...  
Keyword(s):  
Plasmon Resonance ◽  
Indium Tin Oxide ◽  
Optical Switching ◽  
Pump Intensity ◽  
Optical Nonlinearity ◽  
Pump And Probe ◽  
Plasmon Frequency ◽  
All Optical ◽  
All Optical Switching ◽  
Epsilon Near Zero

Abstract Nonlinear optical devices and their implementation into modern nanophotonic architectures are constrained by their usually moderate nonlinear response. Recently, epsilon-near-zero (ENZ) materials have been found to have a strong optical nonlinearity, which can be enhanced through the use of cavities or nano-structuring. Here, we study the pump dependent properties of the plasmon resonance in the ENZ region in a thin layer of thin indium tin oxide (ITO). Exciting this mode using the Kretschmann-Raether configuration, we study reflection switching properties of a 60nm layer close to the resonant plasmon frequency. We demonstrate the thermal switching mechanism, which results in a shift in the plasmon resonance frequency of 20THz for a TM pump intensity of 75GW/cm2. For degenerate pump and probe frequencies, we highlight an additional coherent contribution, not previously isolated in ENZ nonlinear optics studies, which leads to an overall pump induced change in reflection from 1% to 45%.

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