Zobrazeno 1 - 10
of 56
pro vyhledávání: '"H. J. Polland"'
Publikováno v:
Physical Review B. 35:8273-8276
We report transient-photoluminescence spectroscopy measurements of photoexcited hot electrons and holes in an undoped 5-nm GaAs/${\mathrm{Al}}_{0.3}$${\mathrm{Ga}}_{0.7}$As single-quantum-well heterostructure. After picosecond excitation at 1.75 eV,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94d9ed8f762edec83571e2ea6ae80a6c
https://doi.org/10.1103/physrevb.35.8273
https://doi.org/10.1103/physrevb.35.8273
Publikováno v:
Biophysical Journal. 49(3):651-662
The primary processes of the photochemical cycle of light-adapted bacteriorhodopsin (BR) were studied by various experimental techniques with a time resolution of 5 x 10(-13) s. The following results were obtained. (a) After optical excitation the fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44d31379b58e863176530d26e1ce58d8
Autor:
Klaus H. Ploog, Ernst O. Göbel, H. J. Polland, K. Leo, T. Nakayama, K. Fujiwara, Jochen Feldmann, G. Peter
Publikováno v:
Solid-State Electronics. 31:341-344
The trapping efficiency and dynamics of hot carriers in GaAs/AlGaAs single quantum wells with different confinement structures are investigated by photoluminescence excitation spectroscopy and picosecond luminescence spectroscopy. The trapping effici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14f381ba5106a8090d04ce8f61d1a79c
https://doi.org/10.1016/0038-1101(88)90291-2
https://doi.org/10.1016/0038-1101(88)90291-2
Publikováno v:
Physica B+C. 134:412-416
The carrier dynamics in a 5nm Al 0.4 Ga 0.6 As/GaAs single quantum well which is exposed to an electric field perpendicular to the quantum well plane have been studied at low temperature by means of picosecond luminescence, photoluminescence excitati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72f247625069d6b0ea468baacda28f16
https://doi.org/10.1016/0378-4363(85)90380-8
https://doi.org/10.1016/0378-4363(85)90380-8
Publikováno v:
Physical Review B. 36:1136-1139
Time-resolved photoluminescence experiments on a ${\mathrm{Ga}}_{0.47}$${\mathrm{In}}_{0.53}$As/${\mathrm{Al}}_{0.48}$${\mathrm{In}}_{0.52}$As multiple-quantum-well structure grown by molecular-beam epitaxy yield a strong dependence of plasma cooling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78e0939ef50f54009ce425496a7ea623
https://doi.org/10.1103/physrevb.36.1136
https://doi.org/10.1103/physrevb.36.1136
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Bioenergetics. 851:407-415
Two-step excitation of retinal in bacteriorhodopsin by visible light is followed by an energy transfer to amino acids that is seen as fluorescent emission around 350 nm. The fluorescence spectrum obtained after two-step excitation (2 × 527 nm) diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::908729a141cc60565066edd4ea2f3c3e
https://doi.org/10.1016/0005-2728(86)90077-0
https://doi.org/10.1016/0005-2728(86)90077-0
Publikováno v:
Physical Review Letters. 55:2610-2613
We report on picosecond luminescence studies of GaAs/AlGaAs quantum wells in the regime of the quantum-confined Stark effect. A drastic increase of the recombination lifetime is accompanied by a Stark shift of the photoluminescence of the lowest free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e401dbe3688a5628e6f46361f03bbec
https://doi.org/10.1103/physrevlett.55.2610
https://doi.org/10.1103/physrevlett.55.2610
Publikováno v:
IEEE Journal of Quantum Electronics. 20:191-194
A novel type of picosecond light source is the traveling-wave dye laser. It consists of a generator and an amplifier cell, both pumped by single pulses. Using the fast switching dye No. 5 with a fluorescence quantum efficiency of 5 \times 10^{-4} , o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6fdd7ad89bda70569dfaf70995bb0f1
https://doi.org/10.1109/jqe.1984.1072373
https://doi.org/10.1109/jqe.1984.1072373
Autor:
H. J. Polland, K. H. Drexhage, M. Kussler, A. Seilmeier, Wolfgang Kaiser, N. J. Marx, Thomas Elsaesser, B. Sens
Publikováno v:
Applied Physics B Photophysics and Laser Chemistry. 32:53-57
The stimulated emission of new infrared dyes was investigated. The dyes have shortS 1-lifetimes between 5 and 12 ps with corresponding low fluorescence quantum efficiencies of 10−3 to 10−4. In spite of this, 2% of the pumping energy were converte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0056022627585427a367fa528988347d
https://doi.org/10.1007/bf00688543
https://doi.org/10.1007/bf00688543
Publikováno v:
Physical Review B. 36:7722-7725
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeb75d19d7f5796850f38df38662bb5e
https://doi.org/10.1103/physrevb.36.7722
https://doi.org/10.1103/physrevb.36.7722