Impact of the Nature of the Excited-State Transition Dipole Moments on the Third-Order Nonlinear Optical Response of Polymethine Dyes for All-Optical Switching Applications

ACS Photonics ◽  
2014 ◽  
Vol 1 (3) ◽  
pp. 261-269 ◽  
Author(s):  
Rebecca L. Gieseking ◽  
Sukrit Mukhopadhyay ◽  
Chad Risko ◽  
Jean-Luc Brédas
Keyword(s):  
Optical Switching ◽  
State Transition ◽  
Dipole Moments ◽  
Polymethine Dyes ◽  
Third Order ◽  
Transition Dipole ◽  
The Third ◽  
Transition Dipole Moments ◽  
All Optical ◽  
All Optical Switching

THIRD-ORDER NONLINEAR OPTICAL INVESTIGATION OF A NOVEL MATERIAL IN THE NEAR-IR REGIONS

2010 ◽  
Vol 19 (03) ◽  
pp. 407-413
Author(s):  
YAN-LING WANG ◽  
GUAN-CHENG JIANG ◽  
YE-FEI WANG ◽  
JING-JING ZHENG ◽  
MA LI
Keyword(s):  
Pulse Width ◽  
Optical Switching ◽  
Acetonitrile Solution ◽  
Optical Investigation ◽  
Third Order ◽  
The Third ◽  
Near Ir ◽  
All Optical ◽  
Novel Material ◽  
All Optical Switching

The third-order nonlinearity of a novel ET[bis(ethylenedithio)-tetrathiafulvalene] complex (ET ⋅ BF3) has been measured by using the Z-scan technique with a laser pulse width of 30 ps at 1064 nm. The third-order nonlinear refractive index (n2), nonlinear absorption coefficient (β) and nonlinear susceptibilities (χ(3)) of a sample acetonitrile solution are 3.5 × 10-11 esu, 1.65 cm/GW and 5.4 × 10-12 esu, respectively. The nonresonant second-order hyperpolarizability (γ) for the molecule has been estimated to be 2.77 × 10-30 esu. The two merit factors for all-optical switching are W ≫ 1 and T = 1.49, respectively.

Third‐order optical nonlinearity and all‐optical switching in porous silicon

1995 ◽  
Vol 67 (3) ◽  
pp. 323-325 ◽  
Author(s):  
Fryad Z. Henari ◽  
Kai Morgenstern ◽  
Werner J. Blau ◽  
Vladimir A. Karavanskii ◽  
Vladimir S. Dneprovskii
Keyword(s):  
Porous Silicon ◽  
Optical Switching ◽  
Optical Nonlinearity ◽  
Third Order ◽  
All Optical ◽  
All Optical Switching

Nonlinear Optics of Linear Conjugated Polymers

1992 ◽  
Vol 247 ◽  
Author(s):  
D. Guo ◽  
S. Mazumdar ◽  
G. I. Stegeman ◽  
M. Cha ◽  
D. Neher ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Dipole Moments ◽  
Harmonic Signal ◽  
Oscillator Strengths ◽  
Experimental Investigations ◽  
Transition Dipole ◽  
Third Harmonic ◽  
The Third ◽  
Transition Dipole Moments ◽  
Spectral Ranges

The third order nonlinear optical properties of conjugated polymers have been considered promising since the 1970s when Sauteret et al reported large non-resonant values in PTS.[1] Although it is well-understood that the physical origin of the nonlinearities is due to the delocalization of the π-electrons, the details, and how best to calculate them have been the focus of a continuing theoretical dialogue. Until recently, experimental investigations of nonlinearities have been limited to only a few wavelengths. Now third harmonic generation (THG), which accesses only the electronic nonlinearities, can be performed over wide spectral ranges, for example from 500 to 2000 nm. The resulting third harmonic wavelength typically spans the electronic molecular transitions associated with the nonlinearities. By measuring the spectral distribution of both the amplitude and phase of the third harmonic signal, the dominant transitions (between the“essential states”) contributing to the nonlinearity can be identified. Such information is most useful for comparing with theories in which the oscillator strengths (transition dipole moments) for the various molecular transitions are calculated.

25th Anniversary Article: Design of Polymethine Dyes for All-Optical Switching Applications: Guidance from Theoretical and Computational Studies

2013 ◽  
Vol 26 (1) ◽  
pp. 68-84 ◽  
Author(s):  
Rebecca L. Gieseking ◽  
Sukrit Mukhopadhyay ◽  
Chad Risko ◽  
Seth R. Marder ◽  
Jean-Luc Brédas
Keyword(s):  
Optical Switching ◽  
Polymethine Dyes ◽  
Computational Studies ◽  
25Th Anniversary ◽  
All Optical ◽  
All Optical Switching
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