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Monolithic integration of quantum dot containing microdisk microcavities coupled to air-suspended waveguides
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM image of the waveguide coupled microdisk structure. (a) Isometric view of the entire structure; input port and output port . Disk . (b) Output grating coupler. (c) Side- and (d) top-view of the microdisk with waveguide. The air-suspended waveguide is fabricated within the evanescent extension of the microdisk WGM to ensure coupling.

Image of FIG. 2.
FIG. 2.

PL spectrum of the microdisk collected from the pinhole (a) placed directly on the microdisk image. Cavity modes seen here are scattered via side-wall roughness out of plane toward the collection optics. (b) Placed on the grating coupler. Cavity modes seen here are coupled from microdisk to waveguide and emitted from the output grating. (c) Individual QD spectrum at low power. (d) (1,29) modes of uncoupled/coupled microdisks.

Image of FIG. 3.
FIG. 3.

(a) Transmission spectrum of the microdisk obtained by shifting the mode against fixed laser wavelength by temperature change. is measured with the transmission depth of . (b) CCD image of the output grating coupler when light is coupled from the input grating coupler. (c) Experimental configuration for transmission measurement. The input grating coupler is illuminated at 60° from the normal direction, and the signal is collected through a pinhole that is placed on the output grating coupler.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Monolithic integration of quantum dot containing microdisk microcavities coupled to air-suspended waveguides