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Blue semiconductor nanocrystal laser
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10.1063/1.1863445
/content/aip/journal/apl/86/7/10.1063/1.1863445
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/7/10.1063/1.1863445
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Figures

Image of FIG. 1.
FIG. 1.

(a) AFM image of a typical NC-silica film over a area. The surface roughness (rms) is , consistent with the smooth morphology depicted in the image. (b) Tunable fluorescence of NCs in silica films (dotted lines). Their corresponding room-temperature ASE spectra (solid lines), which occur at 454, 477, and , feature dramatically reduced linewidths (from ).

Image of FIG. 2.
FIG. 2.

(a) Plot of the room-temperature ASE intensity as a function of number of laser shots. The left and right insets show the ASE emission at and laser shots, respectively. (b) Linear plot of ASE intensity as a function of stripe length obtained from VSL measurements on a -silica film at room temperature. The fitted curve (solid line) gives a biexciton modal gain of .

Image of FIG. 3.
FIG. 3.

(Color) (a) and (b) Fluorescence microscope images of a typical -diameter NC-microsphere composite under white and UV light excitation, respectively. The bright halo in (b) is due to agglomeration of the NC-sol at the base of the sphere during spin casting. (c) Lasing spectra from the NC-microspheres at increasing pump intensities. (d) The integrated lasing intensity (after subtracting the contribution from background fluorescence) in (c) plotted at various pump powers shows clear threshold behavior. The insets on the left and right are the actual emission spectra of the data points indicated by the arrows.

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/content/aip/journal/apl/86/7/10.1063/1.1863445
2005-02-07
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Blue semiconductor nanocrystal laser
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/7/10.1063/1.1863445
10.1063/1.1863445
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