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Photonic crystal band edge laser array with a holographically generated square-lattice pattern
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic view of an air-bridge type PC fabricated by the combination of laser holography and conventional photolithography (bottom view) and scanning-electron-microscope images of the corresponding PC structure (top views).

Image of FIG. 2.
FIG. 2.

Photonic band structure below the light line for the square-lattice air-hole 2D-PC formed in a free-standing waveguide slab. The air-hole size and slab thickness are and . Shaded in gray is the gain band of the MQW active layer.

Image of FIG. 3.
FIG. 3.

(a) Emission spectra from two nearby band edge lasers. The inset is the curve for a typical band edge laser. (b) Calculated wavelength of the band edge lasing modes as functions of air-hole size. Solid circles are the experimentally determined lasing modes in (a), which fit best to the theoretical lines when .

Image of FIG. 4.
FIG. 4.

(a) The mode lasing spectra for a series of band edge lasers in a row of the 2D-PC laser array. The peak heights are normalized. (b) The mode lasing wavelength as a function of physical position of PC laser. One missing data point near is due to device failure. Note that, for some devices in (b), lasing spectra are not plotted in (a) for clarity.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photonic crystal band edge laser array with a holographically generated square-lattice pattern