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Showing 13 to 24 of 80 entries
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Simulations and experiments on self-focusing conditions in nematic liquid-crystal planar cells.

Optics express

Beeckman J, Neyts K, Hutsebaut X, Cambournac C, Haelterman M.
PMID: 19474916
Opt Express. 2004 Mar 22;12(6):1011-8. doi: 10.1364/opex.12.001011.

Owing to the nonlinear effect of optical field-induced director reorientation, self-focusing of an optical beam can occur in nematic liquid crystals and an almost diffraction-compensated propagation can be observed with milliwatts of light power and propagation lengths of several...

Comment on "Optical response of nonlinear planar resonators under pulsed-beam excitation".

Physical review. B, Condensed matter

Haelterman M, Reinisch R, Vitrant G.
PMID: 10008091
Phys Rev B Condens Matter. 1993 Nov 15;48(20):15465-15467. doi: 10.1103/physrevb.48.15465.

No abstract available.

Bifurcations of the dark soliton and polarization domain walls in nonlinear dispersive media.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Haelterman M, Sheppard AP.
PMID: 9961747
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1994 May;49(5):4512-4518. doi: 10.1103/physreve.49.4512.

No abstract available.

Online Training of an Opto-Electronic Reservoir Computer Applied to Real-Time Channel Equalization.

IEEE transactions on neural networks and learning systems

Antonik P, Duport F, Hermans M, Smerieri A, Haelterman M, Massar S.
PMID: 28113606
IEEE Trans Neural Netw Learn Syst. 2017 Nov;28(11):2686-2698. doi: 10.1109/TNNLS.2016.2598655. Epub 2016 Aug 26.

Reservoir computing is a bioinspired computing paradigm for processing time-dependent signals. The performance of its analog implementation is comparable to other state-of-the-art algorithms for tasks such as speech recognition or chaotic time series prediction, but these are often constrained...

Modulational instability and critical regime in a highly birefringent fiber.

Physical review. A, Atomic, molecular, and optical physics

Bilbault JM, Haelterman M, Millot G, Remoissenet M, Seve E, Tchofo Dinda P.
PMID: 9913880
Phys Rev A. 1996 Oct;54(4):3519-3534. doi: 10.1103/physreva.54.3519.

No abstract available.

Intrapersonal Achievement Goals and Underlying Reasons among Long Distance Runners: Their Relation with Race Experience, Self-Talk, and Running Time.

Psychologica Belgica

Delrue J, Mouratidis A, Haerens L, De Muynck GJ, Aelterman N, Vansteenkiste M.
PMID: 30479441
Psychol Belg. 2016 Jul 13;56(3):288-310. doi: 10.5334/pb.280.

In a sample of long distance runners, we examined the role of type of intrapersonal achievement goals (i.e., approach versus avoidance) and type of underlying reasons (i.e., autonomous and controlled), assessed prior to the race, as predictors of both...

Symmetry-breaking instability of multimode vector solitons.

Physical review letters

Cambournac C, Sylvestre T, Maillotte H, Vanderlinden B, Kockaert P, Emplit P, Haelterman M.
PMID: 12190464
Phys Rev Lett. 2002 Aug 19;89(8):083901. doi: 10.1103/PhysRevLett.89.083901. Epub 2002 Jul 31.

We show experimentally that the two-component multimode spatial optical vector soliton, i.e., a two-hump self-guided laser beam, exhibits in Kerr media a sharp space-inversion symmetry-breaking instability. The experiment is performed in a CS2 planar waveguide using the orthogonal circular...

Condensation in Hamiltonian parametric wave interaction.

Physical review letters

Picozzi A, Haelterman M.
PMID: 15089208
Phys Rev Lett. 2004 Mar 12;92(10):103901. doi: 10.1103/PhysRevLett.92.103901. Epub 2004 Mar 11.

In the generic Hamiltonian problem of parametric wave interaction, we show theoretically the existence of a sudden transition leading the wave system from completely incoherent states towards highly coherent states. This self-organization process is characterized by a reduction of...

Correction: Impaired Mitochondrial Energy Production Causes Light-Induced Photoreceptor Degeneration Independent of Oxidative Stress.

PLoS biology

Jaiswal M, Haelterman NA, Sandoval H, Xiong B, Donti T, Kalsotra A, Yamamoto S, Cooper TA, Graham BH, Bellen HJ.
PMID: 29509758
PLoS Biol. 2018 Mar 06;16(3):e1002622. doi: 10.1371/journal.pbio.1002622. eCollection 2018 Mar.

[This corrects the article DOI: 10.1371/journal.pbio.1002197.].

Embodiment of Learning in Electro-Optical Signal Processors.

Physical review letters

Hermans M, Antonik P, Haelterman M, Massar S.
PMID: 27689299
Phys Rev Lett. 2016 Sep 16;117(12):128301. doi: 10.1103/PhysRevLett.117.128301. Epub 2016 Sep 16.

Delay-coupled electro-optical systems have received much attention for their dynamical properties and their potential use in signal processing. In particular, it has recently been demonstrated, using the artificial intelligence algorithm known as reservoir computing, that photonic implementations of such...

Countering spatial soliton breakdown in nematic liquid crystals.

Optics letters

Beeckman J, Azarinia H, Haelterman M.
PMID: 19529741
Opt Lett. 2009 Jun 15;34(12):1900-2. doi: 10.1364/ol.34.001900.

Spatial optical soliton propagation in any material is limited by the losses of the optical beam, which results in beam broadening. In nematic liquid crystals it is possible to tune the magnitude of the nonlinearity by means of a...

Competition between modulational instability and switching in optical bistability.

Optics letters

Coen S, Haelterman M.
PMID: 18071414
Opt Lett. 1999 Jan 15;24(2):80-2. doi: 10.1364/ol.24.000080.

We study theoretically and experimentally the switching dynamics of a nonlinear optical bistable system that exhibits modulational instability in the vicinity of its lower limit point. We show that modulational instability induces premature upswitching and, in this way, truncates...

Showing 13 to 24 of 80 entries