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Showing 25 to 36 of 80 entries
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Additive-modulation-instability ring laser in the normal dispersion regime of a fiber.

Optics letters

Haelterman M, Trillo S, Wabnitz S.
PMID: 19794617
Opt Lett. 1992 May 15;17(10):745-7. doi: 10.1364/ol.17.000745.

A synchronously pumped modulational-instability ring laser with a nonlinear dispersive fiber can be operated in both the anomalous and the normal dispersion regimes. We obtain simple analytical expressions for the sideband gain in the cavity by using an average...

Continuous-wave ultrahigh-repetition-rate pulse-train generation through modulational instability in a passive fiber cavity.

Optics letters

Coen S, Haelterman M.
PMID: 18033500
Opt Lett. 2001 Jan 01;26(1):39-41. doi: 10.1364/ol.26.000039.

Thanks to a passive cavity configuration, modulational instability in fibers is successfully observed, for the first time to our knowledge, in the continuous-wave regime. Our technique provides a new means of generating all-optically ultrahigh-repetition-rate pulse trains and opens up...

Nonparaxiality stabilizes three-dimensional soliton beams in Kerr media.

Optics letters

Sheppard AP, Haelterman M.
PMID: 18091924
Opt Lett. 1998 Dec 01;23(23):1820-2. doi: 10.1364/ol.23.001820.

On the basis of simple physical arguments involving energy flows and power invariants, we show that nonparaxiality stabilizes (1+2D) soliton beams in Kerr media.

Pulse-train generation through modulational instability in intracavity second-harmonic generation.

Optics letters

Trillo S, Haelterman M.
PMID: 19876270
Opt Lett. 1996 Aug 01;21(15):1114-6. doi: 10.1364/ol.21.001114.

We show, taking dispersion into account, that second-harmonic generation in a cavity can be modulationally unstable. In the monostable mode of operation this instability might predominate with respect to self-pulsing instabilities, leading to the generation of stable solitarylike pulse...

Polarization-domain solitary waves of circular symmetry in Kerr media.

Optics letters

Sheppard AP, Haelterman M.
PMID: 19844468
Opt Lett. 1994 Jun 15;19(12):859-61. doi: 10.1364/ol.19.000859.

We present a new class of dark circularly symmetric solitary wave in bulk, self-defocusing Kerr media. The waves comprise two orthogonally polarized fields mutually guiding each other and forming separate polarization domains. The stability of these new solutions and...

Standing localized modes in nonlinear lattices.

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

Haelterman M, Kivshar YS, Sheppard AP.
PMID: 9962362
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1994 Oct;50(4):3161-3170. doi: 10.1103/physreve.50.3161.

No abstract available.

Bio-protocol

Karki HS, Halterman DA.
PMID: 33732813
Bio Protoc. 2021 Feb 20;11(4):e3926. doi: 10.21769/BioProtoc.3926. eCollection 2021 Feb 20.

No abstract available.

Improvement of transfusion practice and reduction in red blood cell utilization in Belgian hospitals: Results of a national survey and benchmarking.

Vox sanguinis

Vanden Broeck J, Beeckman K, Van Gastel E, De Keersmaecker L, Devos T, Gérard C, Noens L, Putzeys D, Van Poucke K, Haelterman M, Deneys V, Schots R.
PMID: 34374093
Vox Sang. 2021 Aug 09; doi: 10.1111/vox.13187. Epub 2021 Aug 09.

BACKGROUND AND OBJECTIVES: Belgian health authorities launched a national platform in 2011 to improve the quality of transfusion practices and blood use in Belgian hospitals. No data were available about the quality of hospital transfusion practice at the national...

Coherence properties of the parametric three-wave interaction driven from an incoherent pump.

Physical review. E, Statistical, nonlinear, and soft matter physics

Picozzi A, Montes C, Haelterman M.
PMID: 12513621
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5):056605. doi: 10.1103/PhysRevE.66.056605. Epub 2002 Nov 20.

We consider the basic problem of the parametric generation process from an incoherent pump wave. The analysis of the degenerate configuration of the two-wave interaction reveals that the mutual convection (i.e., group-velocity difference) between the incoherent pump and the...

Domain wall solitons in binary mixtures of Bose-Einstein condensates.

Physical review letters

Coen S, Haelterman M.
PMID: 11580632
Phys Rev Lett. 2001 Oct 01;87(14):140401. doi: 10.1103/PhysRevLett.87.140401. Epub 2001 Sep 11.

The structure and dynamics of the domain walls separating segregated condensates in trapped mixtures of repulsive Bose-Einstein condensates are studied. Our work reveals that, under fairly general conditions, these domain walls behave as independent dynamical entities, which allows us...

Influence of walk-off, dispersion, and diffraction on the coherence of parametric fluorescence.

Physical review. E, Statistical, nonlinear, and soft matter physics

Picozzi A, Haelterman M.
PMID: 11415035
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 May;63(5):056611. doi: 10.1103/PhysRevE.63.056611. Epub 2001 Apr 18.

We consider the basic problem of spontaneous parametric generation from quantum noise fluctuations in the presence of a continuous plane-wave pump. We show, both numerically and analytically, that the walk-off between the down-converted fields is the key ingredient that...

Stable topological spatial solitons in optical parametric oscillators.

Optics letters

Trillo S, Haelterman M, Sheppard A.
PMID: 18185722
Opt Lett. 1997 Jul 01;22(13):970-2. doi: 10.1364/ol.22.000970.

We predict that nearly resonant optical parametric oscillators support stable topological spatial solitons as a result of the interplay between diffraction and parametric amplification due to chi((2)) nonlinearities. Robust soliton stripes are observed in two transverse dimensions. Their stability...

Showing 25 to 36 of 80 entries