Measurements of optical nonlinearities in MOCVD-grown GaAs/GaAlAs multiple quantum wells
Abstract
Measurements on nonlinear absorption made by A. Kost and M. Kawase in material provided by H. C. Lee, A. Hariz, and P. D. Dapkus are presented. Five samples with differing well thicknesses were compared. By fitting the measurements of saturable absorption at particular wavelengths to excitonic bleaching (at low intensity levels) and background absorption saturation (at high intensity levels), the separate contributions to the absorption are inferred. The well dependence of the height of the absorption contributions and also the saturation intensities were measured. From measurements of the wavelength dependence of the saturable absorption, calculations were made of the wavelength dependence of the change in refractive index. The dependence of the change in index with intensity on or near resonance is sublinear. This presentation is represented by charts and tables only.
- Publication:
-
Quantum Mechanical Aspects of Quantum Electronics
- Pub Date:
- 1987
- Bibcode:
- 1987qmaq.rept..117G
- Keywords:
-
- Computation;
- Quantum Wells;
- Saturation;
- Vapor Deposition;
- Absorption Spectra;
- Aluminum Gallium Arsenides;
- Gallium Arsenides;
- Refractivity;
- Thickness;
- Solid-State Physics