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Fabrication and characteristics of tapered waveguide semiconductor Raman lasers

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3 Author(s)
Suto, K. ; Fac. of Eng., Tohoku Univ., Sendai, Japan ; Kimura, T. ; Nishizawa, J.

Low pump-power operation of GaP semiconductor Raman lasers with a tapered waveguide structure is reported. The waveguides are both laterally and vertically tapered and fabricated by the temperature difference method under controlled vapour pressure with liquid-phase epitaxy and an improved growth process, which has not caused any serious increase of internal optical loss. The lowest threshold pump power of 55 mW has been achieved

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Optoelectronics, IEE Proceedings -  (Volume:143 ,  Issue: 2 )