Patent ID: 6566688
Filing Date: 2003-05-20
Classification: B82Y,H01S,Y10S

Abstract:
A compound semiconductor device with a wavelength of operation, comprising:a substrate; and an active region disposed above the substrate, the active region comprising at least first and second adjacent pseudomorphic layers, wherein: the first pseudomorphic layer has the form InxGa1âˆ’xPyAszSb1âˆ’yâˆ’z and includes at least In, Ga, and As; the second pseudomorphic layer has the form InxGa1âˆ’xPyAszSb1âˆ’yâˆ’z and includes at least Ga, As, and Sb; and the compositions of the first and second pseudomorphic layers are different such that the wavelength of operation is substantially determined by the compositions of the first and second pseudomorphic layers.