International Business Machines Corporation

Hans Peter Dietrich

Peter Roentgen

David J Webb

Marcel Gasser

Hanspeter Ott

Abram Jakubowicz

Ernst-Eberhard Latta

A semiconductor laser diode, and a method for producing the semiconductor laser diode, includes a waveguide being terminated by a back facet and a front facet and a front facet coating and a back facet coating having a reflectivity providing for controlled decoupling of light at the front facet from the standing lightwave in the waveguide. The front facet coating includes a stack of layers providing for a phase shift of the standing lightwave within the waveguide such that the intensity of the lightwave at the front facet, where the light is decoupled from the standing lightwave, has a relative minimum.

Semiconductor lasers and method for making the same

A method and apparatus for maintaining orientation of a wafer with respect to the wafer holder and a source emission is disclosed. Briefly stated, a wafer is disposed on a wafer holder and displaced in translation only while made to continuously follow a planar closed path which allows the rotation of the wafer with respect to source of emission while keeping the wafer and the wafer holder uniformly aligned with respect to each other.

Wafer holder method and apparatus in a vacuum deposition system

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Adliswil, Switzerland

Hans Peter Dietrich