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Träfflista för sökning "WFRF:(Lovqvist A.) srt2:(2001)"

Sökning: WFRF:(Lovqvist A.) > (2001)

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1.
  • Carlsson, C., et al. (författare)
  • Performance characteristics of buried heterostructure VCSELs using semi-insulating GaInP : Fe regrowth
  • 2001
  • Ingår i: IEEE Journal of Quantum Electronics. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9197 .- 1558-1713. ; 37:7, s. 945-950
  • Tidskriftsartikel (refereegranskat)abstract
    • We have fabricated GaAs-AlGaAs buried heterostructure vertical cavity surface emitting lasers, emitting at 850 nm, using semi-insulating GaInP:Fe regrowth and investigated their static properties. Lasers of different size (10-21 mum) have threshold currents in the range 2.8-7.0 mA, and produce a maximum output power of 1.7-6.0 mW at room temperature. The variation of threshold current with device size shows that the leakage current at the regrowth interface accounts for a significant part of the injection current. In spite of this, a differential quantum efficiency in the range 20%-30% is obtained which indicates that the regrowth interface is smooth and does not introduce any significant scattering loss. Studies of the transverse mode properties suggest that the GaInP provides weak guiding, resulting in single mode operation up to an output power of 0.7 mW and a beam divergence of only 6 degrees for lasers as large as 10 mum.
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2.
  • Angulo Barrios, C., et al. (författare)
  • GaAs/AlGaAs buried-heterostructure laser diodes with semi-insulating GaInP:Fe regrowth
  • 2001
  • Ingår i: Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on.
  • Konferensbidrag (refereegranskat)abstract
    • GaAs/AlGaAs buried-heterostructure in-plane lasers and vertical-cavity surface-emitting lasers using GaInP:Fe as the burying layer have been fabricated and investigated. Regrowth of GaInP:Fe around etched laser mesas was achieved by hydride vapor phase epitaxy. The lasers exhibit good performance under CW operation and show promising high-speed characteristics.
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