Short Communication: The 1 :1 Co-Crystal of 2-Amino-5-nitro-1,3-thiazole with 4-Aminobenzoic Acid

2001 ◽  
Vol 54 (8) ◽  
pp. 493 ◽  
Author(s):  
Daniel E. Lynch
Keyword(s):  
Structural Unit ◽  
Short Communication ◽  
Second Harmonic ◽  
Harmonic Signal ◽  
Aminobenzoic Acid ◽  
Hydrogen Atoms ◽  
Lattice Space ◽  
Graph Set ◽  
Second Harmonic Signal ◽  
Additional Hydrogen

The basic structural unit of the 1:1 co-crystal of 2-amino-5-nitro-1,3-thiazole with 4-aminobenzoic acid, [(2-antz)(4-aba)], comprises two constituent molecules associated by a hydrogen-bonded R2 2(8) graph set dimer through the carboxylic group across the N/N site of the thiazole [O–H···N, 2.614(3) Å; N–H···O, 2.991(3) Å]. Additional hydrogen-bonding associations from the three remaining amino hydrogen atoms construct a non-centrosymmetric packing lattice (space group: P21). The bulk ungraded powder exhibits a second harmonic signal of I/Iurea= 5.7. Manuscript received: 16 July 2001. Final version: 9 November 2001.

Investigation of Transition Metal-Xanthate Complexes for Nonlinear Optical Applications

1998 ◽  
Vol 519 ◽  
Author(s):  
David E. Zelmon ◽  
Zewdu Gebeyehu ◽  
David Tomlin ◽  
Thomas M. Cooper
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Frequency Doubling ◽  
Harmonic Signal ◽  
Metal Salts ◽  
Potassium Salts ◽  
Metal Xanthate ◽  
Optical Applications ◽  
Nonlinear Optical Applications ◽  
Second Harmonic Signal

AbstractWe have synthesized several metal xanthate complexes from metal salts and xanthate potassium salts. Powders of several of the materials were sorted and tested for their nonlinear optical properties. Cadmium xanthate demonstrated phase matchability for frequency doubling of 1.06 micron light and generated a very strong second harmonic signal.

SECOND HARMONIC GENERATION IN ZnO NANORODS

2010 ◽  
Vol 19 (03) ◽  
pp. 445-458 ◽  
Author(s):  
MALYAJ DAS ◽  
SHIVANI RANA ◽  
PRATIMA SEN
Keyword(s):  
Second Harmonic Generation ◽  
Comparative Study ◽  
Harmonic Generation ◽  
Nd:Yag Laser ◽  
Second Harmonic ◽  
Zno Nanorods ◽  
Harmonic Signal ◽  
Pulsed Nd:Yag Laser ◽  
Micro Particles ◽  
Second Harmonic Signal

A comparative study of the second harmonic generation in ZnO micro particles and nanorods has been experimentally studied by Kurtz technique using nanosecond pulsed Nd:YAG laser. The results have been theoretically explained by taking into account the quadrupole moment as well as surface nonlinearity. It was observed that the nanorods yield polarized second harmonic signal while the second harmonic signal obtained from the micro particles was unpolarized.

Efficient Second Harmonic Generation in Hydrazone, Derivatives of Substituted Aromatic Aldehydes

1989 ◽  
Vol 173 ◽  
Author(s):  
Richard S. Potember ◽  
Robert C. Hoffman ◽  
Karen A. Stetyick
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Harmonic Signal ◽  
Aromatic Aldehydes ◽  
Dihydrogen Phosphate ◽  
Ammonium Dihydrogen Phosphate ◽  
Harmonic Signals ◽  
Derivatives Of ◽  
Second Harmonic Signal

ABSTRACTHydrazone, 1,1-dimethylhydrazone, methylhydrazone, phenylhydrazone and p-nitrophenyl hydrazone derivatives of substituted aromatic aldehydes were prepared and screened for second harmonic generation using the Kurtz powder technique. One compound, 4-nitro-3-methoxybenzaldehyde hydrazone exhibited a second harmonic signal up to 32 times that of ammonium dihydrogen phosphate (ADP) and 4-nitrobenzaldehyde hydrazone exhibited a second harmonic signal five times higher than previously reported, up to 40 times that of ADP. 3-methyl-4-nitrobenzaldehyde hydrazone, 4-nitrobenzaldehyde phenylhydrazone, 1-naphthaldehyde phenylhydrazone, 1-pyrenecarboxaldehyde phenylhydrazone exhibited second harmonic signals 25, 2.5, 5 and 20 times that of an ADP standard.

scholarly journals Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

2006 ◽  
Vol 941 ◽  
Author(s):  
Haibin Zhao ◽  
Diyar Talbayev ◽  
Gunter Luepke ◽  
Aubrey Hanbicki ◽  
Connie Li ◽  
...  
Keyword(s):  
Second Harmonic ◽  
High Sensitivity ◽  
Harmonic Signal ◽  
Direct Consequence ◽  
Optical Effect ◽  
Kerr Rotation ◽  
Hard Axis ◽  
Magneto Optical Effect ◽  
Kerr Angle ◽  
Second Harmonic Signal

AbstractA large nonlinear magneto-optical effect is observed in a non-centrosymmetric Fe/AlGaAs (001) heterostructure. This effect is a direct consequence of interference between second-harmonic optical waves of magnetic and crystallographic origin, generated at ferromagnetic Fe interface and bulk AlGaAs, respectively. The longitudinal nonlinear Kerr rotation is measured to be 1.6° along the [1-10] hard axis, about two orders of magnitude stronger than the linear equivalent. The rotational second-harmonic signal shows large magnetic contrast along all the in-plane directions, demonstrating a high sensitivity to the magnetization of an anisotropic interface in the longitudinal geometry.

Correlations between second harmonic signal, microstructure, and mechanics of contracting collagen gels

2008 ◽  
Author(s):  
Christopher B. Raub ◽  
Peter D. Kim ◽  
Andrew J. Putnam ◽  
John S. Lowengrub ◽  
Bruce J. Tromberg ◽  
...  
Keyword(s):  
Second Harmonic ◽  
Harmonic Signal ◽  
Collagen Gels ◽  
Second Harmonic Signal
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