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Tunable edge emitting microlaser was realized with a line defect waveguide, in which the radii of holes adjacent to the defect was varied gradually. A tunable range of 17 nm was obtained experimentally.
The guide mode whose frequency locates in the band edge in photonic crystal single line defect waveguide has very low group velocity. So the confinement and gain of electromagnetic field in the band edge are strongly enhanced. Photonic crystal waveguide laser is fabricated and the slow light phenomenon is investigated. The laser is pumped by pulsed pumping light at 980 nm whose duty ratio is 0.05%...
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