Ground and excited state transitions in as-grown Ga0.64In0.36N0.046As0.954 quantum wells studied by contactless electroreflectance

2007 ◽  
Vol 90 (4) ◽  
pp. 041916 ◽  
Author(s):  
Robert Kudrawiec ◽  
Marta Gladysiewicz ◽  
Jan Misiewicz ◽  
Fumitaro Ishikawa ◽  
Klaus H. Ploog
Keyword(s):  
Excited State ◽  
Quantum Wells ◽  
State Transitions

Electromodulation spectroscopy of the ground and excited state transitions in GaInN/AlInN multi-quantum wells

2009 ◽  
Vol 40 (4-5) ◽  
pp. 805-808
Author(s):  
R. Kudrawiec ◽  
M. Gladysiewicz ◽  
J. Misiewicz ◽  
G. Cywiński ◽  
M. Siekacz ◽  
...  
Keyword(s):  
Excited State ◽  
Quantum Wells ◽  
State Transitions

scholarly journals Neutron-inducedγ-ray production cross sections for the first excited-state transitions in20Ne and22Ne

2012 ◽  
Vol 86 (6) ◽  
Author(s):  
S. MacMullin ◽  
M. Boswell ◽  
M. Devlin ◽  
S. R. Elliott ◽  
N. Fotiades ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Production Cross ◽  
State Transitions ◽  
First Excited State

scholarly journals Measurements of n?g Coincidences in the Reaction 10B (d, n?)11C

1960 ◽  
Vol 13 (2) ◽  
pp. 99 ◽  
Author(s):  
JA McDonell ◽  
DG Sargood ◽  
JR Moroney ◽  
JR Prescott
Keyword(s):  
Excited State ◽  
Excited States ◽  
Ground State ◽  
State Transitions

The energies of some neutron groups leading to low excited states of "C in the reaction lOB(d,ny)"C have been measured. These lead to values of 4�3�0�3 MeV and 6�53 � O' 02 MeV for the energies of the second and fourth excited states respectively. y-Ray spectra have also been studied in coincidence with different neutron groups. Ground state transitions were observed from the second, third, and fourth excited states, together with cascade decays of the fourth excited state through each of the second and third. Deductions from these y-ray spectra considerably reduce the number of spin possibilities which have been found for these levels by other workers.

scholarly journals Dual-wavelength mode-locked quantum-dot laser, via ground and excited state transitions: experimental and theoretical investigation

2010 ◽  
Vol 18 (12) ◽  
pp. 12832 ◽  
Author(s):  
Maria Ana Cataluna ◽  
Daniil I. Nikitichev ◽  
Spiros Mikroulis ◽  
Hercules Simos ◽  
Christos Simos ◽  
...  
Keyword(s):  
Excited State ◽  
Quantum Dot ◽  
Theoretical Investigation ◽  
Dual Wavelength ◽  
State Transitions ◽  
Quantum Dot Laser

scholarly journals LBA observations of OH masers in the star-forming region OH 330.953–0.182

2007 ◽  
Vol 3 (S242) ◽  
pp. 162-163
Author(s):  
B. Hutawarakorn Kramer ◽  
J. L. Caswell ◽  
A. Sukom ◽  
J. E. Reynolds
Keyword(s):  
Magnetic Field ◽  
Excited State ◽  
Ground State ◽  
State Transitions ◽  
Star Forming ◽  
Left Hand ◽  
Physical Conditions ◽  
Star Forming Regions ◽  
Long Baseline ◽  
Right And Left Hand

AbstractOH masers are sensitive probes of the kinematics, physical conditions, and magnetic fields in star-forming regions. The maser site OH 330.953-0.182 has been studied using the Long Baseline Array of the Australia Telescope National Facility. Simultaneous observations of the 1665- and 1667-MHz hydroxyl ground-state transitions yield a series of maps at velocity spacing 0.09kms−1, in both right- and left-hand circular polarization, with tenth-arcsec spatial resolution. Several clusters of maser spots have been detected within a five-arcsec region. Eight Zeeman pairs were found, and in one case, at 1665 MHz, there is a nearby 1667-MHz pair indicating a similar value of magnetic field and velocity. Over the whole site, all magnetic field estimates are toward us (negative), and range from -3.7 to -5.8 mG. We also compared the morphology and kinematics of the 1665- and 1667-MHz maser spots with those from the excited state of OH at 6035 MHz and from methanol at 6668 MHz.

EXCITED STATE PHOTOLUMINESCENCE IN STEPPED InGaAs/AlGaAs QUANTUM WELLS UNDER PICOSECOND EXCITATION

2003 ◽  
Vol 02 (06) ◽  
pp. 427-435
Author(s):  
V. A. SHALYGIN ◽  
L. E. VOROBJEV ◽  
V. Yu. PANEVIN ◽  
D. A. FIRSOV ◽  
S. HANNA ◽  
...  
Keyword(s):  
Excited State ◽  
Quantum Wells ◽  
Special Interest ◽  
Population Inversion ◽  
Auger Recombination ◽  
Stimulated Emission ◽  
Energy Structure ◽  
Electron Hole ◽  
Picosecond Excitation ◽  
Electron Energy Structure

The technique of photoluminescence (PL) studies based on intense picosecond excitation of electron–hole pairs is applied to investigate the electron energy structure including the positions of high-lying excited levels in stepped quantum wells (QWs). The spectra of PL in regimes of spontaneous and stimulated emission are studied under different excitation levels and light polarizations. Of special interest are intense photoluminescence signals from excited subbands. The feasibility of a e3–e2 intersubband population inversion in stepped QWs is demonstrated and the influence of Auger recombination was examined.

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