Spatially singlemode broad-area semiconductor laser with planar external cavity |
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| Authors: | Kolesnikov M. Castillega J. Bhandarkar N. Stelmakh N. |
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| Affiliation: | Photo-digm Inc., Richardson, TX, USA; |
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| Abstract: | A broad-area laser diode combined with a planar external waveguide cavity operates in the fundamental mode and reshapes the output emission into a circular 15/spl deg/ beam. A 500 /spl mu/m-long by 40 /spl mu/m-wide laser diode with uncoated facets coupled with the uncoated ModeReShaper (MRS) planar chip has a coupling efficiency of /spl sim/40% and stabilised the fundamental mode at drive currents up to three-times threshold. |
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