Asymmetric spectrum evolution of high power short pulses in AlGaAs waveguides
| Autor: | H. M. van Driel, J. P. Mondia, C. De Angelis, J.S. Aitchison, S. Linden, H. W. Tan, Daniele Modotto, T.C. Kleckner, Andrea Locatelli, Roberto Morandotti, Colin Stanley |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
Kerr effect business.industry Physics::Optics Self-phase modulation short pulses propagation Laser Two-photon absorption Waveguide (optics) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention semiconductor waveguides Wavelength Optics law Dispersion (optics) Electrical and Electronic Engineering Physical and Theoretical Chemistry business Ultrashort pulse |
| Zdroj: | Optics Communications. 249:201-208 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2005.01.023 |
| Popis: | We measured the self-phase modulation spectra at the output of deep-etched AlGaAs waveguides. The light source was an OPO laser system providing 250 fs long pulses, at wavelengths around 1520 nm, with a peak power as high as 1 kW. FROG measurements of the OPO pulses reveal their asymmetric shape. The multi-peak spectra, observed at the waveguide output, show a dramatic asymmetry and a power shift towards short wavelengths. The interplay between the Kerr non-linearity, dispersion and self-steepening amplifies the initial slight asymmetry of the injected spectrum. Experimental results compare favourably with the numerical solution of the generalized non-linear Schrodinger equation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect