Journal ArticleDOI
Polymer-based microcavity with photoencoded quadratic nonlinearity.
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TLDR
Functional electro-optic polymer thin films embedded in microcavity structures have been poled by an all-optical procedure based on the interference of multiphoton absorption processes, leading to significant enhancement of the second-harmonic-generation efficiency.Abstract:
Functional electro-optic polymer thin films embedded in microcavity structures have been poled by an all-optical procedure based on the interference of multiphoton absorption processes. The photoinduced χ2 tensor was then further addressed at modal resonance for the fundamental wavelength, leading to significant enhancement of the second-harmonic-generation efficiency. An order-of-magnitude enhancement, which is due to electric field resonant conditions inside the microcavity, has been probed by an optical parametric oscillator, in comparison with a single-path thin-film configuration. This configuration opens new perspectives in the realm of nonlinear photonic device processing.read more
Citations
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Journal ArticleDOI
Phase-matched second-harmonic generation in cross-linking polyurethane films by thermal-assisted optical poling
Jinhai Si,Kazuyuki Hirao +1 more
TL;DR: In this paper, phase-matched second-harmonic generation (SHG) in thermal-cross-linking polyurethane films was demonstrated using a thermal-assisted nonresonant optical poling technique.
Journal ArticleDOI
Quantum and tensorial modeling of multipolar nonlinear optical chromophores by a generalized equivalent internal potential
TL;DR: In this article, the equivalent internal field model was extended to three-dimensional multipolar chromophores and a general formalism was developed for analyzing the hyperpolarizabilities induced by application of various internal potentials to a molecular skeleton.
Journal ArticleDOI
Matching molecular and optical multipoles in photoisomerizable nonlinear systems
TL;DR: In this article, the authors investigated the coupling rules between molecules and optical fields in the all-optical poling scheme and showed that the efficiency and symmetry of the photoinduced quadratic nonlinearity is dependent on tensorial selection rules connecting the symmetries of the optical poling fields and the molecular tensors.
Journal ArticleDOI
Anisotropy and dispersion of a Pockels tensor: a benchmark for electro-optic organic thin-film assessment
TL;DR: The dominant components of the χ(2)(-ω; ǫ, 0) nonlinear quadratic susceptibility tensor of a poled polymer-based nonlinear organic thin film are measured independently with a Fabry-Perot interferometric technique as mentioned in this paper.
Journal ArticleDOI
Enhanced photoinduced birefringence in polymer microcavities
TL;DR: In this paper, photo-induced birefringence in functionalized polymer microcavities illuminated by a visible polarized cw laser beam was investigated, which is based on random-to-axial statistical reorientation of the azochromophores following repetitive trans-cis-trans photoisomerization cycles.
References
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Journal ArticleDOI
Dye laser pumped by Nd:YAG laser pulses frequency doubled in a glass optical fiber.
Ulf Osterberg,Walter Margulis +1 more
TL;DR: The frequency-doubled light generated in the glass fibers was sufficient to pump a commercial Rh6G dye laser with ~19% efficiency at 570 nm.
Journal ArticleDOI
Multipolar molecules and multipolar fields: probing and controlling the tensorial nature of nonlinear molecular media
Sophie Brasselet,Joseph Zyss +1 more
TL;DR: In this article, a general class of multipolar molecules is introduced in the context of quadratic nonlinear optics by way of extension of the more specific cases of dipolar and octupolar molecules, and experiments in both harmonic light scattering in solution and optical poling (in Disperse Red 1-methyl methacrylate thin films) are analyzed in light of this model.
Journal ArticleDOI
Quasi-permanent all-optical encoding of noncentrosymmetry in azo-dye polymers
TL;DR: In this article, an original poling technique that uses a purely optical excitation process is presented, which consists of a seeding-type process that alternates between writing and probing periods.
Journal ArticleDOI
Control of the polarization dependence of optically poled nonlinear polymer films.
Sophie Brasselet,Joseph Zyss +1 more
TL;DR: A purely octupolar polarization-independent photoinduced second-harmonic-generation response in a Dispersed Red 1-methyl methacrylate thin film is found and is not within the reach of the classical electric-field poling technique.
Journal ArticleDOI
Physical effects in optical fields with nonzero average cube, 〈E 3 〉 ≠ 0
N. B. Baranova,B. Ya. Zel’dovich +1 more
TL;DR: In this paper, the polar asymmetry in electron emission due to interference between two-photon ionization by the fundamental radiation (ω) and one-poton ionisation by the second-harmonic (2ω) wave was calculated.
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