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Photonic crystal coupled cavities with increased beaming and free space coupling efficiency
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10.1063/1.4772955
/content/aip/journal/apl/102/1/10.1063/1.4772955
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4772955
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

SEM images and emission spectra of unfolded (a), (b) and folded (c), (d) coupled L3 cavities. Measured sizes are a = 437 nm, s = 66 nm, and . Circles filled in red denote the shifted and shrunk-end holes to increase the Q-factor, those filled in green denote the modified holes to achieve the band-folding effect.

Image of FIG. 2.
FIG. 2.

Unfolded coupled nanocavities. Near field emission (a) and (f) and photoluminescence spectrum (b) and (e) of two L3 cavities separated by 3 rows of holes. Experimental (c) and (g) and simulated (d) and (h) far field patterns. (a)-(d) Symmetric ( ) mode, and (e)-(h) antisymmetric ( ) mode. Pump power 24 μW. In (a), (f): dashed lines indicate the cavity position.

Image of FIG. 3.
FIG. 3.

Same as Fig. 2 for the folded coupled nanocavities. Pump power 29.3 μW.

Image of FIG. 4.
FIG. 4.

Laser power as a function of pump power for both symmetric (circles) and anti-symmetric (squares) modes. The inset shows the spectral FWHM of the emission for both modes.

Image of FIG. 5.
FIG. 5.

Reflectivity contrast for the symmetric (circles) and the anti-symmetric (squares) modes as a function of the laser position. The probe power is 1.1 μW. Vertical dotted line indicates the cavity positions. The spectra for three emblematic positions, namely left cavity (L), center of the barrier (C), and right cavity (R), are also presented.

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/content/aip/journal/apl/102/1/10.1063/1.4772955
2013-01-04
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photonic crystal coupled cavities with increased beaming and free space coupling efficiency
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4772955
10.1063/1.4772955
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