Chain-length dependence of the third-order polarizability of disubstituted polyenes: effects of end groups and conjugation length

1993 ◽  
Vol 97 (37) ◽  
pp. 9385-9391 ◽  
Author(s):  
Germain Puccetti ◽  
Mireille Blanchard-Desce ◽  
Isabelle Ledoux ◽  
Jean Marie Lehn ◽  
Joseph Zyss
Keyword(s):  
Chain Length ◽  
Conjugation Length ◽  
Third Order ◽  
The Third ◽  
Length Dependence ◽  
End Groups

ChemInform Abstract: Chain-Length Dependence of the Third-Order Polarizability of Disubstituted Polyenes. Effects of End Groups and Conjugation Length.

ChemInform ◽  
2010 ◽  
Vol 24 (52) ◽  
pp. no-no
Author(s):  
G. PUCCETTI ◽  
M. BLANCHARD-DESCE ◽  
I. LEDOUX ◽  
J.-M. LEHN ◽  
J. ZYSS
Keyword(s):  
Chain Length ◽  
Conjugation Length ◽  
Third Order ◽  
The Third ◽  
Length Dependence ◽  
End Groups

Chain-length dependence of the quadratic hyperpolarizability of push-pull polyenes and carotenoids. Effect of end groups and conjugation path

1994 ◽  
Vol 181 (1-2) ◽  
pp. 281-289 ◽  
Author(s):  
M. Blanchard-Desce ◽  
J.-M. Lehn ◽  
M. Barzoukas ◽  
I. Ledoux ◽  
J. Zyss
Keyword(s):  
Chain Length ◽  
Length Dependence ◽  
End Groups

Alternation and saturation effects in the chain-length dependences of the third-order hyperpolarizabilities of cyanines

1998 ◽  
Vol 15 (2) ◽  
pp. 863 ◽  
Author(s):  
W. Werncke ◽  
M. Pfeiffer ◽  
A. Lau ◽  
W. Grahn ◽  
H.-H. Johannes ◽  
...  
Keyword(s):  
Chain Length ◽  
Third Order ◽  
The Third ◽  
Saturation Effects

Probe size and 5th-order aberration

1987 ◽  
Vol 45 ◽  
pp. 134-135 ◽  
Author(s):  
Zhifeng Shao
Keyword(s):  
Electron Probe ◽  
Spherical Aberration ◽  
Wave Length ◽  
Cylindrical Symmetry ◽  
Electron Wave ◽  
Third Order ◽  
The Third ◽  
Probe Radius ◽  
Small Probe ◽  
Probe Size

A small electron probe has many applications in many fields and in the case of the STEM, the probe size essentially determines the ultimate resolution. However, there are many difficulties in obtaining a very small probe.Spherical aberration is one of them and all existing probe forming systems have non-zero spherical aberration. The ultimate probe radius is given byδ = 0.43Csl/4ƛ3/4where ƛ is the electron wave length and it is apparent that δ decreases only slowly with decreasing Cs. Scherzer pointed out that the third order aberration coefficient always has the same sign regardless of the field distribution, provided only that the fields have cylindrical symmetry, are independent of time and no space charge is present. To overcome this problem, he proposed a corrector consisting of octupoles and quadrupoles.

Children’s Recall of Approximations to English

1973 ◽  
Vol 16 (2) ◽  
pp. 201-212 ◽  
Author(s):  
Elizabeth Carrow ◽  
Michael Mauldin
Keyword(s):  
Language Development ◽  
Fourth Order ◽  
Third Order ◽  
Memory Processes ◽  
The Third ◽  
General Index ◽  
General Linguistic

As a general index of language development, the recall of first through fourth order approximations to English was examined in four, five, six, and seven year olds and adults. Data suggested that recall improved with age, and increases in approximation to English were accompanied by increases in recall for six and seven year olds and adults. Recall improved for four and five year olds through the third order but declined at the fourth. The latter finding was attributed to deficits in semantic structures and memory processes in four and five year olds. The former finding was interpreted as an index of the development of general linguistic processes.

scholarly journals Ultrafast Third-Order Nonlinear Optical Response Excited by fs Laser Pulses at 1550 nm in GaN Crystals

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3194
Author(s):  
Adrian Petris ◽  
Petronela Gheorghe ◽  
Tudor Braniste ◽  
Ion Tiginyanu
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Third Harmonic Generation ◽  
High Repetition Rate ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
High Repetition ◽  
Gan Crystal

The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can arise in the sample by cumulative thermal effects induced by high-repetition-rate laser pulses cannot be responsible for the third-harmonic generation, the ultrafast nonlinear optical effect of solely electronic origin is the only one involved in this process. The third-order nonlinear optical susceptibility of GaN crystal responsible for the third-harmonic generation process, an important indicative parameter for the potential use of this material in ultrafast photonic functionalities, is determined.

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