Nonlinear optical behavior of ultrashort pulses in scattering media

A third-order nonlinear optical crystal of lithium hydrogen maleate dihydrate (LHMD) is grown by the process of slow evaporation at room-temperature. The LHMD crystal system is orthorhombic and is a member of P space group. Using FTIR spectral investigation, the presence of main functional groups in LHMD crystal is identified. The optical behavior of the crystal is determined by UV-Visible spectroscopy. The bandgap energy of the LHMD crystal is calculated to be 3.4 eV. By Vickers microhardness measurements, the mechanical behavior has been assessed. The melting point of LHMD is determined by TG-DTA analysis. The defects present in the LHMD crystal are studied by dielectric loss and dielectric constant. SHG studies are performed for the LHMD crystal by Kurtz and Perry method. The third-order nonlinear characteristics of the LHMD crystal are analyzed by Z-scan technique. The laser damage threshold (LDT) study is carried out to verify the suitability of the crystal for laser applications.

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Theory of linearly chirped quasi-parabolic ultrashort pulses from coherent nonlinear optical amplifiers

36th European Conference and Exhibition on Optical Communication ◽

10.1109/ecoc.2010.5621499 ◽

2010 ◽

Author(s):

Stefan Wabnitz ◽

Victor V. Kozlov

Keyword(s):

Nonlinear Optical ◽

Optical Amplifiers ◽

Ultrashort Pulses

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Structure, Spectroscopic Study and ab initio Calculations on Third-order Nonlinear Optical Behavior of N-(2-Hydroxy-4-methoxybenzylidene)-3- nitroaniline

Zeitschrift für Naturforschung B ◽

10.1515/znb-2008-1110 ◽

2008 ◽

Vol 63 (11) ◽

pp. 1315-1320

Author(s):

Hüseyin Üver ◽

Aslı Karaka§ ◽

Ayhan Elmalı ◽

T. Nuri Durlu

Keyword(s):

Ab Initio ◽

Nonlinear Optical ◽

Photon Absorption ◽

X Ray Diffraction ◽

Third Order ◽

Hartree Fock ◽

H Nmr ◽

Calculation Results ◽

Zero Values ◽

Optical Behavior

Abstract N-(2-hydroxy-4-methoxybenzylidene)-3-nitroaniline (1) has been synthesized and characterized by X-ray diffraction analysis, FTIR and 1H NMR spectroscopy. The maximum one-photon absorption (OPA) wavelengths recorded by quantum mechanical computations using a configuration interaction (CI) method are estimated in the UV region to be shorter than 450 nm, showing good optical transparency to the visible light. We have computed both dispersion-free (static) and also frequency-dependent (dynamic) linear polarizabilities (α) and second hyperpolarizabilities (γ) by using the time-dependent Hartree-Fock (TDHF) method to provide an insight into the microscopic third-order nonlinear optical (NLO) behavior of the title compound. The ab initio calculation results with non-zero values on (hyper)polarizabilities indicate that the synthesized molecule might possess microscopic third-order NLO phenomena.

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Nonlinear optical behavior of n-tuple decker phthalocyanines at the nanosecond regime: investigation of change in mechanisms

RSC Advances ◽

10.1039/c9ra01836k ◽

2019 ◽

Vol 9 (28) ◽

pp. 16223-16234 ◽

Cited By ~ 2

Author(s):

Kutloano E. Sekhosana ◽

Tebello Nyokong

Keyword(s):

Rare Earth ◽

Nonlinear Optical ◽

Optical Limiting ◽

Double Decker ◽

Optical Behavior

Rare-earth n-tuple decker phthalocyanine complexes exhibit superior optical limiting properties than the neutral double-decker derivatives, with the normalized transmittance reduced to about 80%.

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