Modification of the second-order optical nonlinearities in AlGaAs asymmetric multiple quantum well waveguides by quantum well intermixing

Street, M.W., Whitbread, N.D., Hamilton, C.J., Vögele, B., Stanley, C.R., Hutchings, D.C., Marsh, J.H. , Aitchison, J.S., Kennedy, G.T. and Sibbett, W. (1997) Modification of the second-order optical nonlinearities in AlGaAs asymmetric multiple quantum well waveguides by quantum well intermixing. Applied Physics Letters, 70(21), pp. 2804-2806. (doi: 10.1063/1.119064)

Abstract

We demonstrate that a quantum well intermixing technique can be used to control the second-order nonlinearity χ(2)zzz in an AlGaAs asymmetric coupled quantum well waveguide structure at 1.52 μm. Photoluminescence measurements also indicate that the spatial resolution of the impurity-free vacancy disordering process used for quantum well intermixing is better than 1.5 μm which should be sufficient for first-order quasiphase-matched second harmonic generation.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sibbett, Professor Wilson and Marsh, Professor John and Stanley, Professor Colin
• Authors: Street, M.W., Whitbread, N.D., Hamilton, C.J., Vögele, B., Stanley, C.R., Hutchings, D.C., Marsh, J.H., Aitchison, J.S., Kennedy, G.T., and Sibbett, W.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: AIP Publishing
• ISSN: 0003-6951
• ISSN (Online): 1077-3118