undefined, Improvement of the beam quality of high-power broad area semiconductor diode lasers by means of an external resonator,
undefined, Improvement of the beam quality of high-power broad area semiconductor diode lasers by means of an external resonator,

The operation of high-power broad area laser diodes in an external resonator is studied with respect to the improvement of their lateral beam quality. A simple setup with a broad area laser diode as gain medium, two lenses and an external mirror is considered. The concept relies on the ability of the active region of the laser diode to act as a spatial filter for higher order modes oscillating inside the resonator.The geometries of the external cavity laser that favor fundamental mode operation in... Mehr

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