Matches in SemOpenAlex for { <https://semopenalex.org/work/W2056520408> ?p ?o ?g. }
- W2056520408 abstract "We report a study of the carrier dynamics in an ${mathrm{In}}_{0.18}{mathrm{Ga}}_{0.82}mathrm{N}$ thin film photoexcited well above the band gap using nondegenerate pump-probe spectroscopy and time-resolved photoluminescence (TRPL) for carrier densities ranging from ${10}^{17}$ to ${10}^{19} {mathrm{cm}}^{ensuremath{-}3}$ at 10 K. At carrier densities greater than $4ifmmodetimeselsetexttimesfi{}{10}^{18} {mathrm{cm}}^{ensuremath{-}3},$ optical gain occurs across the entire band tail region after $ensuremath{sim}2.5 mathrm{ps}$ time delay, when the hot carriers completely fill these states. From TRPL measurements performed in the surface emission geometry, we observed stimulated emission (SE) with a $ensuremath{sim}28 mathrm{ps}$ decay time. Since this SE has a threshold density of $1ifmmodetimeselsetexttimesfi{}{10}^{18} {mathrm{cm}}^{ensuremath{-}3},$ which is larger than the total density of localized states, and the SE spectra at early time delays are quite different from the spontaneous emission spectra, we attribute the SE to the recombination of an electron-hole plasma from renormalized band-to-band transitions." @default.
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- W2056520408 date "2001-04-05" @default.
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- W2056520408 title "Femtosecond pump-probe spectroscopy and time-resolved photoluminescence of an<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>In</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant=normal…" @default.
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- W2056520408 doi "https://doi.org/10.1103/physrevb.63.195302" @default.
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