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Transient thermoreflectance imaging of active photonic crystals
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10.1063/1.3323100
/content/aip/journal/apl/96/9/10.1063/1.3323100
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/9/10.1063/1.3323100
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Sketch of the top view of the Bloch mode device (device 1). (b) Cut view inside device 1. (c) Sketch of the top view of the membrane device (device 2). (d) Cut view inside the membrane device. Arrows correspond to two heating locations studied in Fig. 3.

Image of FIG. 2.
FIG. 2.

Setup developed to achieve TTRI on optically pumped active PhCs. Samples are pumped with a laser diode and probed with a LED. All the voltage supplies are synchronized to provide the proper triggers to the camera, the pump and the probe in order to achieve four-bucket integration mode measurements. FG2 is an abbreviation for function generator 2.

Image of FIG. 3.
FIG. 3.

(a) Relative reflectivity change as a function of the delay when the pump is focused on device 1, on the membrane of device 2. Images of the relative reflectivity change are plotted for , 130, 500, and 1000 ns. (b) Heat spot width as a function of the delay for cases and .

Image of FIG. 4.
FIG. 4.

(a) Spatially averaged temperature for cases and as a function of time, deduced from the deconvolution of the measured by . Inset (b): comparison between the measurement and the convolution by of and , both deduced from the fit for case 1.

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/content/aip/journal/apl/96/9/10.1063/1.3323100
2010-03-03
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transient thermoreflectance imaging of active photonic crystals
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/9/10.1063/1.3323100
10.1063/1.3323100
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