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Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution
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10.1063/1.3464962
/content/aip/journal/apl/97/3/10.1063/1.3464962
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/3/10.1063/1.3464962
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Figures

Image of FIG. 1.
FIG. 1.

(a) Cumulative (dashed curves) and differential (solid curves) pore size distributions of and . Inset shows the SEM image of . (b) CBS cones of (open circles) and (closed circles). Solid curves represent the theoretical fits based on the diffusion theory.

Image of FIG. 2.
FIG. 2.

(a) PL spectra of infiltrated with a R640 solution measured with various pump powers (black solid curves). Emission from a neat R640 solution excited at 220 nJ is described by a gray solid curve. (b) Pump power dependence of integrated PL intensity (left axis) and FWHM (right axis) for infiltrated with a R640 solution. The vertical dotted line represents a pump power of 119 nJ/pulse. (c) PL spectra of infiltrated with a R640 solution measured with various pump powers. (d) Pump power dependence of integrated PL intensity for infiltrated with a R640 solution. The inset enlarges the region around the thresholds. Three lines are guides for the eyes, and arrows represent two thresholds at 45 and 75 nJ/pulse.

Image of FIG. 3.
FIG. 3.

(a) PL spectra of infiltrated with a R640 solution obtained at various sample positions while pump power is fixed to 97 nJ. The spectra were translated vertically for clarity. Vertical dotted lines correspond to the wavelengths of the representative lasing peaks: (i) 602.05 nm, (ii) 603.54 nm, and (iii) 605.50 nm. (b) The correlation coefficient between the data taken at a reference position (indicated by dotted circles) and that at various . The values were calculated from the spectra in Fig. 3(a) after subtracting the broad background emission. Only the data of ±0.35 nm around the peaks (ii) and (iii) were used for the calculation.

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/content/aip/journal/apl/97/3/10.1063/1.3464962
2010-07-23
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Random lasing from localized modes in strongly scattering systems consisting of macroporous titania monoliths infiltrated with dye solution
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/3/10.1063/1.3464962
10.1063/1.3464962
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