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Spatially singlemode broad-area semiconductor laser with planar external cavity

Spatially singlemode broad-area semiconductor laser with planar external cavity

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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° beam. A 500 µm-long by 40 µm-wide laser diode with uncoated facets coupled with the uncoated ModeReShaper (MRS) planar chip has a coupling efficiency of ∼40% and stabilised the fundamental mode at drive currents up to three-times threshold.

Inspec keywords: III-V semiconductors; waveguide lasers; indium compounds; laser cavity resonators; semiconductor lasers; gallium arsenide

Other keywords: InGaAsP; singlemode semiconductor laser; planar external waveguide cavity; coupling efficiency; mode-reshaper planar chip; broad-area laser diode

Subjects: Lasing action in semiconductors; Laser resonators and cavities; Laser resonators and cavities; Semiconductor lasers

References

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      • C.H. Henry , R.F. Kazarinov , H.J. Lee , K.J. Orlowsky , L.E. Katz . Low loss Si3N4-SiO2 optical waveguides on Si. Appl. Opt. , 13 , 2621 - 2625
    5. 5)
    6. 6)
      • Kazarinov, R., Temkin, H., Stelmakh, N.: `Optical waveguide multimode to single mode transformer', International, 09/722,100, December 2000.
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