Symmetry point group description of second harmonic generation in carbon nanotubes

2004 ◽  
Vol 1 (4) ◽  
pp. 172-175 ◽  
Author(s):  
L De Dominicis ◽  
R Fantoni ◽  
S Botti ◽  
L S Asilyan ◽  
R Ciardi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Point Group ◽  
Symmetry Point ◽  
Symmetry Point Group

Second-harmonic Generation Microscopy of Carbon Nanotubes

2012 ◽  
Author(s):  
Mikko J. Huttunen ◽  
Olli Herranen ◽  
Andreas Johansson ◽  
Hua Jiang ◽  
Prasantha R. Mudimela ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Second Harmonic Generation Microscopy

Background-Free Second-Harmonic Generation Microscopy of Individual Carbon Nanotubes

2015 ◽  
Author(s):  
Godofredo Bautista ◽  
Andreas Johansson ◽  
Nikhil Parappurath ◽  
Olli Herranen ◽  
Pasi Myllyperkiö ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Second Harmonic Generation Microscopy

Polar potassium rare earth nitrates K2[RE(NO3)5(H2O)2] (RE = La, Ce, Pr and Nd). II. Linear and nonlinear optical properties

2000 ◽  
Vol 33 (2) ◽  
pp. 380-386 ◽  
Author(s):  
H. Hellwig ◽  
S. Rühle ◽  
P. Held ◽  
L. Bohatý
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Point Group ◽  
Nonlinear Optical Properties ◽  
Rare Earth Nitrates ◽  
Linear And Nonlinear

Linear and nonlinear optical properties of the four isomorphic orthorhombic (point groupmm2) potassium rare earth nitrates K2[RE(NO3)5(H2O)2], with RE = La, Ce, Pr or Nd, have been investigated. Refractive indices in a wavelength range from 0.35 to 2.5 µm and the transmission spectra between 0.25 to 3.0 µm were measured. Using the Maker fringe technique, the d_{ijk}^{\rm\, SHG} coefficients of second-harmonic generation for a fundamental of the Nd–YAP laser (λ = 1079.5 nm) were determined for all four compounds. The d_{ijk}^{\rm\, SHG} coefficients of all four substances are about three times larger than those of KDP, as was first published by Ebberset al.[IEEE J. Quantum Electron.(1993),29, 497–507] for K2[La(NO3)5(H2O)2]. These nitrates are promising materials for application to nonlinear optics (e.g.second-harmonic generation of Nd laser radiation). The nonlinear optical properties of these compounds seem to have their origin mainly in the nitrate groups, as indicated by a simple model (summing the molecular hyperpolarizabilities of the NO3group). Neglecting local field effects, the hyperpolarizability of the NO3group was calculated as β222= 2.52 × 10−40 m4 V−1.

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