Title :
Variation of third-order nonresonant nonlinearities in multiple quantum well heterostructures with bandgap tuning using intermixing
Author :
Morandotti, Roberto ; Aitchison, J.S. ; Eisenberg, H. ; Barad, Y. ; Silberberg, Yaron
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
Summary form only given. We make a comparison between the relevant nonresonant nonlinear optical properties of an AlGaAs multiple quantum well (MQW) heterostructure before and after intermixing. In particular, the wavelength dependence of the nonlinear refractive index, two- and three-photon absorption, and the ratio between self-phase modulation (SPM) and cross phase modulation have been experimentally investigated. The waveguide used in this work was designed to support a single slab mode at 1.5 /spl mu/m and was grown by metal organic vapor phase epitaxy (MOVPE) on a semi-insulating GaAs.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; nonlinear optics; optical modulation; phase modulation; refractive index; semiconductor quantum wells; tuning; 1.5 mum; AlGaAs; AlGaAs MQW heterostructure; GaAs; MOVPE; bandgap tuning; cross phase modulation; intermixing; metal organic vapor phase epitaxy; multiple quantum well heterostructures; nonlinear refractive index; nonresonant nonlinear optical properties; self-phase modulation; semi-insulating GaAs; single slab mode; third-order nonresonant nonlinearities; three-photon absorption; two-photon absorption; wavelength dependence; Absorption; Epitaxial growth; Nonlinear optics; Optical modulation; Optical refraction; Optical variables control; Optical waveguides; Phase modulation; Quantum well devices; Refractive index;
Conference_Titel :
Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-339-0
DOI :
10.1109/CLEO.1998.676055
