Patent ID: 6674775
Filing Date: 2004-01-06
Classification: H01S

Abstract:
A laser module comprising:a PN-junction semiconductor laser having a coefficient of thermal expansion (CTE) and having a P-side and an N-side; and a contact structure affixed by affixing means to a surface of the PN-junction semiconductor laser on either the P-side or the N-side, wherein the contact structure comprises; a first component comprised of a layer of a first material having a first CTE; and a second component comprised of a layer of plated with a second material having a second CTE plated on opposing surfaces of the first component, wherein the first and second components have an overall thickness such that the contact structure has an effective CTE that matches the CTE of the semiconductor laser more closely than either the second CTE or the first CTE; and wherein the layers of the second material are of substantially equal thickness to balance thermal stresses between the first component and the second component.