High efficiency operation of butt joint line-defect-waveguide microlaser in two-dimensional photonic crystal slab | Zendy

Wanhua Zheng | Zendy; Gang Ren | Zendy; Mingxin Xing | Zendy; Wei Chen | Zendy; Anjin Liu | Zendy; Wenjun Zhou | Zendy; Toshihiko Baba | Zendy; Kango Nozaki | Zendy; Lianghui Chen | Zendy

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High efficiency operation of butt joint line-defect-waveguide microlaser in two-dimensional photonic crystal slab

Author(s) -

Wanhua Zheng,

Gang Ren,

Mingxin Xing,

Wei Chen,

Anjin Liu,

Wenjun Zhou,

Toshihiko Baba,

Kango Nozaki,

Lianghui Chen

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2973207

Subject(s) - lasing threshold , materials science , waveguide , photonic crystal , optics , slab , optoelectronics , laser , butt joint , dispersion (optics) , physics , wavelength , geophysics , metallurgy

Butt joint line-defect-waveguide microlasers are demonstrated on photonic crystal slabs with airholes in a triangular lattice. Such microlaser is designed to increase the output power from the waveguide edge directly. The output power is remarkably enhanced to 214 times higher by introducing chirped structure in the output waveguide. The lasing mode operates in the linear dispersion region of the output waveguide so that the absorption loss due to the band-edge effect is reduced. The laser resonance is illustrated theoretically using the finite difference time domain method. A practical high power efficiency of 20% is obtained in this microlaser

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