Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Amplified luminescence of heavily doped AlxGa1-xN structures under optical pumping. / Bokhan, P. A.; Zhuravlev, K. S.; Zakrevskii, D. E. и др.
в: Quantum Electronics, Том 48, № 3, 01.01.2018, стр. 215-221.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Amplified luminescence of heavily doped AlxGa1-xN structures under optical pumping
AU - Bokhan, P. A.
AU - Zhuravlev, K. S.
AU - Zakrevskii, D. E.
AU - Malin, T. V.
AU - Osinnykh, I. V.
AU - Fateev, N. V.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Spectral, temporal, and polarisation characteristics of luminescence of heavily doped AlxGa1-xN films on a sapphire substrate are studied under pulsed pumping at the wavelength λ = 266 m. Spectra of spontaneous emission related to donor-acceptor transitions are inhomogeneously broadened with the FWHM of above 0.5 eV and cover the entire visible range. Spectra of radiation emitted from an edge of investigated structure comprise several narrow-band equidistant components, each of them being split to TE and TM modes with mutually orthogonal polarisations. This is related to plane waves propagating inside a plane waveguide along a zigzag path in the conditions of total internal reflection from waveguide surfaces. The optical gains measured for Al0.5Ga0.5N/AlN at λ ≈ 510 nm, Al0.74Ga0.26N/AlN at λ ≈ 468 nm, and AlN/Al0.6Ga0.4N/AlN/Al2O3 at λ ≈ 480 nm were, respectively, ∼70, 20, and 44 cm-1. The luminescence quantum efficiencies measured for Al0.74Ga0.26N, Al0.65Ga0.35N, and Al0.5Ga0.5N films are, respectively, 0.79, 0.49, and 0.14; the transition cross sections calculated at emission band centres are ∼10-18 cm2.
AB - Spectral, temporal, and polarisation characteristics of luminescence of heavily doped AlxGa1-xN films on a sapphire substrate are studied under pulsed pumping at the wavelength λ = 266 m. Spectra of spontaneous emission related to donor-acceptor transitions are inhomogeneously broadened with the FWHM of above 0.5 eV and cover the entire visible range. Spectra of radiation emitted from an edge of investigated structure comprise several narrow-band equidistant components, each of them being split to TE and TM modes with mutually orthogonal polarisations. This is related to plane waves propagating inside a plane waveguide along a zigzag path in the conditions of total internal reflection from waveguide surfaces. The optical gains measured for Al0.5Ga0.5N/AlN at λ ≈ 510 nm, Al0.74Ga0.26N/AlN at λ ≈ 468 nm, and AlN/Al0.6Ga0.4N/AlN/Al2O3 at λ ≈ 480 nm were, respectively, ∼70, 20, and 44 cm-1. The luminescence quantum efficiencies measured for Al0.74Ga0.26N, Al0.65Ga0.35N, and Al0.5Ga0.5N films are, respectively, 0.79, 0.49, and 0.14; the transition cross sections calculated at emission band centres are ∼10-18 cm2.
KW - Gain
KW - Luminescence
KW - Optical pumping
KW - Spontaneous emission
KW - luminescence
KW - GAN
KW - optical pumping
KW - LENGTH
KW - spontaneous emission
KW - BAND SUPERLUMINESCENT DIODES
KW - gain
UR - http://www.scopus.com/inward/record.url?scp=85047725276&partnerID=8YFLogxK
U2 - 10.1070/QEL16529
DO - 10.1070/QEL16529
M3 - Article
AN - SCOPUS:85047725276
VL - 48
SP - 215
EP - 221
JO - Quantum Electronics
JF - Quantum Electronics
SN - 1063-7818
IS - 3
ER -
ID: 13668336