Second order nonlinear optical response at the two-photon resonance in a two-dimensional NLO molecule

G. Meshulam; P. Shaier; G. Berkovic; A. Ben-Asuly; R. Mazor; L. Shapiro; V. Khodorkovsky; Z. Kotler

Second order nonlinear optical response at the two-photon resonance in a two-dimensional NLO molecule

G. Meshulam, P. Shaier, G. Berkovic, A. Ben-Asuly, R. Mazor, L. Shapiro, V. Khodorkovsky, Z. Kotler

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Rod-shaped organic nonlinear optical molecules are generally described as one-dimensional molecules with a single β component. However, analogous molecules having a carbazole group as the electron donor, exhibit special two-dimensional second harmonic behavior due to the presence of two β components, a positive β_zzz and a negative β_zxx. Those components arise from different transitions within the molecule. The effective β of these molecules, measured using either EFISH or the thin film technique in the off-resonance regime, is very small since the two components cancel each other. However, the same measurement in the two-photon resonance regime yields a very strong amplitude enhancement of β which is fitted well by a simplified three-level model.

Original language	English
Pages (from-to)	321-326
Number of pages	6
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume	25
Issue number	1-4
State	Published - 1 Dec 2000
Externally published	Yes

Keywords

Organic NLO molecule
Two-photon resonance

ASJC Scopus subject areas

Control and Systems Engineering
Condensed Matter Physics

Cite this

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abstract = "Rod-shaped organic nonlinear optical molecules are generally described as one-dimensional molecules with a single β component. However, analogous molecules having a carbazole group as the electron donor, exhibit special two-dimensional second harmonic behavior due to the presence of two β components, a positive βzzz and a negative βzxx. Those components arise from different transitions within the molecule. The effective β of these molecules, measured using either EFISH or the thin film technique in the off-resonance regime, is very small since the two components cancel each other. However, the same measurement in the two-photon resonance regime yields a very strong amplitude enhancement of β which is fitted well by a simplified three-level model.",

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T1 - Second order nonlinear optical response at the two-photon resonance in a two-dimensional NLO molecule

AU - Meshulam, G.

AU - Shaier, P.

AU - Berkovic, G.

AU - Ben-Asuly, A.

AU - Mazor, R.

AU - Shapiro, L.

AU - Khodorkovsky, V.

AU - Kotler, Z.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - Rod-shaped organic nonlinear optical molecules are generally described as one-dimensional molecules with a single β component. However, analogous molecules having a carbazole group as the electron donor, exhibit special two-dimensional second harmonic behavior due to the presence of two β components, a positive βzzz and a negative βzxx. Those components arise from different transitions within the molecule. The effective β of these molecules, measured using either EFISH or the thin film technique in the off-resonance regime, is very small since the two components cancel each other. However, the same measurement in the two-photon resonance regime yields a very strong amplitude enhancement of β which is fitted well by a simplified three-level model.

AB - Rod-shaped organic nonlinear optical molecules are generally described as one-dimensional molecules with a single β component. However, analogous molecules having a carbazole group as the electron donor, exhibit special two-dimensional second harmonic behavior due to the presence of two β components, a positive βzzz and a negative βzxx. Those components arise from different transitions within the molecule. The effective β of these molecules, measured using either EFISH or the thin film technique in the off-resonance regime, is very small since the two components cancel each other. However, the same measurement in the two-photon resonance regime yields a very strong amplitude enhancement of β which is fitted well by a simplified three-level model.

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KW - Two-photon resonance

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JO - Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics

JF - Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics

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ER -

Second order nonlinear optical response at the two-photon resonance in a two-dimensional NLO molecule

Abstract

Keywords

ASJC Scopus subject areas

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