A semiconductor laser device includes a tailored index single mode power amplifier.
A high-power laser system can be produced by connecting several of the tailored
index single mode power amplifiers in parallel. In an exemplary case, a phase shifting
device can be optically coupled to each of the tailored index single mode power
amplifiers; the phase shifting devices can be controlled to ensure that the laser
beams output by the tailored index single mode power amplifiers are both phase
aligned and wavefront matched.
