Patent ID: 7483464
Filing Date: 2009-01-27
Classification: H01S

Abstract:
1. A semiconductor laser apparatus comprising: a substrate; a vertical-cavity surface-emitting semiconductor laser diode including a first mirror layer of a first conduction type, a second mirror layer of a second conduction type, an active region sandwiched between the first and the second mirror layers, a first electrode layer electrically connected with the first mirror layer and a second electrode layer electrically connected with the second mirror layer; at least one Zener diode including a first semiconductor region of a first conduction type, a second semiconductor region of a second conduction type formed in a portion of the first semiconductor region and forming a PN junction with the first semiconductor region, a third electrode layer electrically connected with the first semiconductor region and a fourth electrode layer electrically connected with the second semiconductor region, wherein the Zener diode is entirely insulated from the substrate by an insulation film disposed between the Zener diode and the substrate, the vertical-cavity surface-emitting semiconductor laser diode and the Zener diode are formed on the substrate, and the first electrode layer and the fourth electrode layer are electrically connected, and the second electrode layer and the third electrode layer are electrically connected.