Results 141 to 150 of about 2,605 (184)

Supercontinuum generation by the modulation instability

Optics Communications, 2005
We report on a numerical study of supercontinuum generation in a single-mode optical fiber by the modulation instability. An ultrabroadband octave-spanning continuum is generated for femtosecond pulses with subkilowatt peak power. In particular, we investigate the influence of higher-order effects such as third- and fourth-order dispersion, self ...
Demircan, Ayhan, Bandelow, Uwe
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Supercontinuum generation in tapered fibers

Optics Letters, 2000
Supercontinuum light with a spectrum more than two octaves broad (370-1545 nm at the 20-dB level) was generated in a standard telecommunications fiber by femtosecond pulses from an unamplified Ti:sapphire laser. The fiber had been tapered to a diameter of :2mum over a 90-mm length. The pulse energy was 3.9 nJ (average power, 300 mW).
T A, Birks, W J, Wadsworth, P S, Russell
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Supercontinuum Generation in Water

12th International Conference on Fiber Optics and Photonics, 2014
We report efficient generation of a broadband supercontinuum (SC) in water and aqueous gold colloids upon irradiation by intense, near-infrared, femtosecond laser pulses. The SC spectra are rationalized within the framework of a phenomenological self-phase modulation model.
Parinda Vasa, Jayashree A. Dharmadhikari, Aditya K. Dharmadhikari, Rahul Sharma, Mamraj Singh, Rodney Bernard, Deepak Mathur   +6 more
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Towards a thermodynamic description of supercontinuum generation

2009 IEEE/LEOS Winter Topicals Meeting Series, 2008
We consider the incoherent nonlinear regime of the supercontinuum generation process in optical fibers. We show that, under certain conditions, the phenomenon of spectral broadening inherent to the supercontinuum generation may be described by simple thermodynamic arguments based on the kinetic wave theory.
Barviau, Benoît, Kibler, Bertrand, Coen, S., Picozzi, Antonio   +3 more
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Tailored Soliton Statistics in Supercontinuum Generation

Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009
Supercontinuum (SC) generation in highly nonlinear photonic crystal fibers (PCF) has stimulated tremendous interest in recent years [1]. Particular results that have received recent widespread attention concern the observation of “optical rogue waves,” statistically rare extreme red-shifted Raman solitons appearing on the long wavelength edge of the SC
Kibler, Bertrand, Finot, Christophe, Dudley, John M.   +2 more
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Directional supercontinuum generation

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018
Directional supercontinuum is generated in a silicon-rich nitride waveguide with two zero dispersion wavelengths. The supercontinuum is caused by interaction between a soliton and a pulse in the normal dispersion regime leading to dispersive waves.
Simon Christensen, Morten Bache
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In-amplifier mid-infrared supercontinuum generation

Optics Letters, 2015
Mid-infrared supercontinuum (SC) generation from 2.6 to 4.1 μm is demonstrated in a single-mode erbium-doped fluoride glass fiber amplifier pumped at 976 nm and seeded by an optical parametric generation (OPG) source emitting 400 ps pulses at 2.75 μm. Up to 82% of the SC power is generated beyond 3 μm.
Jean-Christophe, Gauthier, Vincent, Fortin, Simon, Duval, Réal, Vallée, Martin, Bernier   +4 more
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Extreme supercontinuum generation to the deep-UV

2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology, 2011
Pumping a sharply tapered (5–30 mm taper lengths) solid-core photonic crystal fiber with 130 fs, 2 nJ pulses at 800 nm generates an efficient supercontinuum down to a record-breaking 280 nm in the deep-UV.
S. Stark, P. St.J. Russell
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Supercontinuum generation in ultraviolet-irradiated fibers

Optics Letters, 2004
We demonstrate that UV exposure of highly nonlinear, germanosilicate fibers causes a strong change in their chromatic dispersion and can significantly alter the infrared supercontinuum generation in these fibers. By varying the level of UV exposure to the fiber, we show that the dispersion zero and the short-wavelength edge of the supercontinuum can be
J W, Nicholson, P S, Westbrook, K S, Feder, A D, Yablon   +3 more
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Supercontinuum generated by six-photon mixing

Optics Letters, 1988
We obtain the shape, phase, and spectral distribution of an ultrafast pulse propagating in a chi((5)) medium (six-photon mixing). The calculation is performed in the plane-wave approximation for a dispersionless medium but with self-steepening present.
J T, Manassah, M A, Mustafa
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