Study of AlGaAs laser heterostructures with multiquantum well active region grown by low temperature liquid phase epitaxy

In this paper we describe the growth and characteristics of AlGaAs/GaAs las er structures with 2, 3, and 4 quantum wells in their active region fabrica ted by Low-Temperature Liquid phase Epitaxy (LT-LPE) technique. The techniq ue uses a piston boat and the temperatures of crystallization are in the 40 0-600 degreesC range. Scanning Electron Microscope and Photoluminescence ex periments show the good planarity and reproducibility of these structures. It is shown that the thickness of the QW layers depend on the supercooling temperature for a given growth time and temperature.