scholarly journals Effect of probe beam intensity on all-optical switching based on excited-state absorption

2012 ◽  
Vol 2 (5) ◽  
pp. 548 ◽  
Author(s):  
Parag Sharma ◽  
Sukhdev Roy
Keyword(s):  
Excited State ◽  
Probe Beam ◽  
Optical Switching ◽  
Excited State Absorption ◽  
Beam Intensity ◽  
All Optical ◽  
All Optical Switching

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.

The Characteristics of All-Optical Switching and Modulation in Phenoxy-Phthalocyanines Liquid

2013 ◽  
Vol 284-287 ◽  
pp. 2830-2834
Author(s):  
Yun Dong Zhang ◽  
Cheng Bao Yao ◽  
Hai Tao Yin ◽  
Chang Qiu Yu ◽  
Jin Li ◽  
...  
Keyword(s):  
Excited State ◽  
Light Intensity ◽  
Response Time ◽  
Optical Switching ◽  
Pump Light ◽  
Pump Probe ◽  
All Optical ◽  
Probe Experiment ◽  
Pump Probe Experiment ◽  
All Optical Switching

We present our experimental results on the measurements of excited state dynamics in 2, 9, 16, 23-phenoxy-phthalocyanine (Pc1) and 2, 9, 16, 23-phenoxy-phthalocyanine-zinc (Pc2) using the pump-probe experiment. The results show that the All-Optical Switching (A-OS) response time of Pc2 longer than that of Pc1, and switch-off and -on times of A-OS for Pc2 are 1.2 and 11.6 μs and for Pc1 are 2.3 and 7.8 μs at the same intensity. Moreover, analysis of modulation characteristics of A-OS shows that the stronger the light intensity of the pump light is, the smaller the normalized transmittance is and the shorter the response time of A-OS is. The consequences of such short lifetimes are also discussed in view of the strong A-OS properties of these molecules.

scholarly journals The lifetime of the triplet excited state and modulation characteristics of all-optical switching in phenoxy-phthalocyanines liquid

2013 ◽  
Vol 21 (2) ◽  
pp. 2212 ◽  
Author(s):  
Chengbao Yao ◽  
Yundong Zhang ◽  
Wenjun Sun ◽  
Changqiu Yu ◽  
Jin Li ◽  
...  
Keyword(s):  
Excited State ◽  
Optical Switching ◽  
Triplet Excited State ◽  
All Optical ◽  
All Optical Switching

PHOTONIC SWITCHING DEVICES BASED ON EXCITED-STATE NONLINEAR ABSORPTION IN C60

1993 ◽  
Vol 02 (04) ◽  
pp. 551-558 ◽  
Author(s):  
CHUNFEI LI ◽  
MIAO YANG ◽  
FENGYUN GUO ◽  
YUXIAO WANG ◽  
KUNIO TADA
Keyword(s):  
Excited State ◽  
Nonlinear Absorption ◽  
Optical Switching ◽  
Experimental Studies ◽  
Linear Absorption ◽  
Photonic Switching ◽  
All Optical ◽  
Optical Switching Devices ◽  
All Optical Switching ◽  
Switching Devices

A new principle of all-optical switching devices based on the excited-state nonlinear absorption working at non-resonant frequency with small linear absorption are proposed. The theory and experimental studies using C60 material are presented in this paper.

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