Patent ID: 7894498
Filing Date: 2011-02-22
Classification: B82Y,H01L,H01S

Abstract:
1. A semiconductor laser device comprising: a submount having a front surface and a back surface corresponding to the opposing face that are in parallel with each other and a visible light transmittance of 60% or more; a connection electrode that is formed on the front surface; and a semiconductor laser element that is packaged on the submount through the connection electrode, and is allowed to emit a laser beam in a direction parallel to the front surface, wherein each of the front surface and the back surface of the submount is allowed to have a ten-point average roughness Rz of 1 μm or less, defined by JIS B0106-1994, and wherein the semiconductor laser element includes a semiconductor substrate, a light emitting unit formed on a front surface of the semiconductor substrate, a first electrode formed on a surface of the light emitting unit and a second electrode formed on a back surface of the semiconductor substrate, so that the first electrode of the semiconductor laser element is electrically connected to the connection electrode on the submount through a solder material.