scholarly journals Ultrafast broadband nonlinear optical properties and excited-state dynamics of two bis-chalcone derivatives

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15199-15205
Author(s):  
Lei Shen ◽  
Zhongguo Li ◽  
Xingzhi Wu ◽  
Wenfa Zhou ◽  
Junyi Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Benzene Ring ◽  
Absorption Spectra ◽  
Nonlinear Optical ◽  
Excited State Absorption ◽  
Nonlinear Optical Properties ◽  
Excited State Dynamics ◽  
Chalcone Derivatives

The introduction of a benzene ring largely affects the excited-state absorption spectra and dynamics of these chromophores.

Ultrafast excited state dynamics and dispersion studies of nonlinear optical properties in dinaphthoporphycenes

2012 ◽  
Vol 100 (14) ◽  
pp. 141109 ◽  
Author(s):  
Debasis Swain ◽  
P. T. Anusha ◽  
T. Shuvan Prashant ◽  
Surya P. Tewari ◽  
Tridib Sarma ◽  
...  
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Excited State Dynamics

Ultrafast excited state dynamics and femtosecond nonlinear optical properties of laser fabricated Au and Ag50Au50 nanoparticles

2019 ◽  
Vol 95 ◽  
pp. 109239 ◽  
Author(s):  
K.N. Krishnakanth ◽  
Byram Chandu ◽  
M.S.S. Bharathi ◽  
Sai Santhosh Kumar Raavi ◽  
S. Venugopal Rao
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Excited State Dynamics

Optical, electrochemical, third-order nonlinear optical, and excited state dynamics studies of thio-zinc phthalocyanine

2014 ◽  
Vol 18 (04) ◽  
pp. 305-315 ◽  
Author(s):  
Debasis Swain ◽  
Varun K. Singh ◽  
Narra V. Krishna ◽  
L. Giribabu ◽  
S. Venugopal Rao
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Nonlinear Optical ◽  
Radiative Decay ◽  
Nonlinear Optical Properties ◽  
Zinc Phthalocyanine ◽  
Closed Aperture ◽  
Third Order ◽  
Pump Probe ◽  
Excited State Dynamics

Zinc phthalocyanine with S-aryl groups at α-positions have been synthesized and its optical, emission, electrochemical and third-order nonlinear optical properties were investigated. Both the Soret and Q-bands were red-shifted and obeyed Beer–Lambert's law. Electrochemical properties indicated that both oxidation and reduction processes were ring centered. Emission spectra were recorded in different solvents and the fluorescence yields obtained were in the range of 0.02 while time-resolved fluorescence data revealed lifetimes of typically few ns. Excited state dynamics in this novel thio-zinc phthalocyanine molecule has been investigated using femtosecond (fs) degenerate pump-probe spectroscopy. Nonlinear optical properties of this molecule have been examined using the Z-scan technique with picosecond (ps) and fs pulses. Both open and closed aperture Z-scan curves were recorded with ~2 ps/~150 fs laser pulses at a wavelength of 800 nm and nonlinear optical coefficients were extracted from both the studies. Degenerate pump-probe data performed at 600 nm suggested a single long lifetime of ~300 ps, possibly originating from the non-radiative decay of S1 state.

Nonlinear Optical Properties and Excited-State Dynamics of Highly Symmetric Expanded Porphyrins

2006 ◽  
Vol 128 (43) ◽  
pp. 14128-14134 ◽  
Author(s):  
Zin Seok Yoon ◽  
Jung Ho Kwon ◽  
Min-Chul Yoon ◽  
Mi Kyoung Koh ◽  
Su Bum Noh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Excited State ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Excited State Dynamics ◽  
Expanded Porphyrins
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