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Organic materials are expected to have relatively strong [[nonlinear optical]] properties due to delocalized electrons at <math>\pi-\pi</math>* orbitals. This expectation explains extensive search for better NLO materials among organic crystals. | |||
==L-arginine maleate dihydrate (LAMD)== | |||
L-Arginine is one of the essential [[amino acids]] widely | |||
distributed in biological substances. It forms a number of salts with organic and inorganic acids showing non-linear optical properties. L-Arginine maleate dihydrate (LAMD, C<sub>6</sub>H<sub>14</sub>N<sub>4</sub>O<sub>2</sub>,C<sub>4</sub>H<sub>4</sub>O<sub>4</sub>,2H<sub>2</sub>O) is one of these L-arginine salts which is a complex of strongly basic | |||
amino acid, carboxylic acid and provides useful information | |||
in relation to molecular interaction in present day biological | |||
systems and to prebiotic self-organisms.<ref>S.L. Miller, E.L. Orgel, "The Origins of Life on the Earth", Prentice- | |||
Hall, New Jersey, 1974.</ref> It is also a nonlinear optical material with second harmonic generation efficiency 1.68 times that of KDP.<ref>"Synthesis, crystal structure and solubility of C6H14N4O2,C4H4O4,2H2O" [http://dx.doi.org/10.1016/j.stam.2005.01.001 Sci. Technol. Adv. Mater. 6 (2005) 508] ('''''free download''''')</ref> | |||
LAMD crystals are grown from solution by solvent evaporation; they belong to the triclinic space group P1. | |||
==L-methionine L-methioninium hydrogen maleate (LMMM)== | |||
LMMM too belongs to the [[amino acid]] family. Crystals are grown by slow evaporation of an aqueous solution containing L-methionine and [[maleic acid]], resulting in centimeter-large crystals of a non-centrosymmetric space group.<ref>"Crystal growth and structure of L-methionine L-methioninium hydrogen maleate—a new NLO material" [http://dx.doi.org/10.1088/1468-6996/9/2/025012 Sci. Technol. Adv. Mater. 9 (2008) 025012] ('''''free download''''')</ref> They were applied for [[second harmonic generation]] of an [[Nd:YAG]] laser (wavelength 1064 nm), and SHG efficiency equal to that of KDP has been obtained. | |||
==References== | |||
{{reflist}} | |||
[[Category:Nonlinear optical materials]] |
Revision as of 06:08, 20 February 2013
Organic materials are expected to have relatively strong nonlinear optical properties due to delocalized electrons at * orbitals. This expectation explains extensive search for better NLO materials among organic crystals.
L-arginine maleate dihydrate (LAMD)
L-Arginine is one of the essential amino acids widely distributed in biological substances. It forms a number of salts with organic and inorganic acids showing non-linear optical properties. L-Arginine maleate dihydrate (LAMD, C6H14N4O2,C4H4O4,2H2O) is one of these L-arginine salts which is a complex of strongly basic amino acid, carboxylic acid and provides useful information in relation to molecular interaction in present day biological systems and to prebiotic self-organisms.[1] It is also a nonlinear optical material with second harmonic generation efficiency 1.68 times that of KDP.[2] LAMD crystals are grown from solution by solvent evaporation; they belong to the triclinic space group P1.
L-methionine L-methioninium hydrogen maleate (LMMM)
LMMM too belongs to the amino acid family. Crystals are grown by slow evaporation of an aqueous solution containing L-methionine and maleic acid, resulting in centimeter-large crystals of a non-centrosymmetric space group.[3] They were applied for second harmonic generation of an Nd:YAG laser (wavelength 1064 nm), and SHG efficiency equal to that of KDP has been obtained.
References
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- ↑ S.L. Miller, E.L. Orgel, "The Origins of Life on the Earth", Prentice- Hall, New Jersey, 1974.
- ↑ "Synthesis, crystal structure and solubility of C6H14N4O2,C4H4O4,2H2O" Sci. Technol. Adv. Mater. 6 (2005) 508 (free download)
- ↑ "Crystal growth and structure of L-methionine L-methioninium hydrogen maleate—a new NLO material" Sci. Technol. Adv. Mater. 9 (2008) 025012 (free download)