Mid-infrared supercontinuum generation in As_2S_3-silica ''nano-spike'' step-index waveguide - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Optics Express Année : 2013

Mid-infrared supercontinuum generation in As_2S_3-silica ''nano-spike'' step-index waveguide

Résumé

Efficient generation of a broad-band mid-infrared supercontinuum spectrum is reported in an arsenic trisulphide waveguide embedded in silica. A chalcogenide "nano-spike", designed to transform the incident light adiabatically into the fundamental mode of a 2-mm-long uniform section 1 μm in diameter, is used to achieve high launch efficiencies. The nano-spike is fully encapsulated in a fused silica cladding, protecting it from the environment. Nano-spikes provide a convenient means of launching light into sub-wavelength scale waveguides. Ultrashort (65 fs, repetition rate 100 MHz) pulses at wavelength 2 μm, delivered from a Tm-doped fiber laser, are launched with an efficiency ~12% into the subwavelength chalcogenide waveguide. Soliton fission and dispersive wave generation along the uniform section result in spectral broadening out to almost 4 μm for launched energies of only 18 pJ. The spectrum generated will have immediate uses in metrology and infrared spectroscopy.
Fichier principal
Vignette du fichier
Granzow_2013_Opt-Exp.pdf (1.73 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01061297 , version 1 (11-09-2014)

Identifiants

Citer

N. Granzow, M. A. Schmidt, W. Chang, L. Wang, Quentin Coulombier, et al.. Mid-infrared supercontinuum generation in As_2S_3-silica ''nano-spike'' step-index waveguide. Optics Express, 2013, 21, pp.10969. ⟨10.1364/OE.21.010969⟩. ⟨hal-01061297⟩
258 Consultations
310 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More