Amplifier device with coupled surface emitting grating

Details Amplifier device with coupled surface emitting grating Amplifier device with coupled surface emitting grating

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H01S 3/098 (2006.01) H01S 3/086 (2006.01) H01S 3/1055 (2006.01) H01S 5/10 (2006.01) H01S 5/187 (2006.01) H01S 5/50 (2006.01)

Patent

CA 2012229

A surface emitting grating is coupled to an optical amplifier and has grating elements tilted non-normal relative to the amplifier optical axis. The angle of tilt in one embodiment is such that the grating reflections are refracted out of the amplifier region. The amplifier may have a tilted light receiving end serving as an input port in a second embodiment to cause internal reflections from the grating to be reflected to an amplifier boundary at an angle greater than the critical angle to cause the reflections to pass out of the amplifier region. In the latter embodiment, the grating tilt angle is minimized to reduce the surface emission beam ankle tilt from the normal to a relatively small angle.

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