Results 11 to 20 of about 3,363,829 (323)

Terahertz quantum cascade lasers operating up to ∼ 200 K with optimized oscillator strength and improved injection tunneling.

Optics Express, 2012
A new temperature performance record of 199.5 K for terahertz quantum cascade lasers is achieved by optimizing the lasing transition oscillator strength of the resonant phonon based three-well design.
S. Fathololoumi, E. Dupont, C. W. I. Chan, Z. Wasilewski, S. Laframboise, D. Ban, A. Màtyàs, C. Jirauschek, Q. Hu, H. C. Liu   +9 more
semanticscholar   +3 more sources

An Investigation on Electric Dipole Transitions of Pt LXVII

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In the present work, we have reported the energy levels, wavelengths, weighted oscillator strengths, and transition probabilities for electric dipole (E1) transitions of magnesium like platinum (Pt LXVII, Z=78).
Gülay Günday Konan
doaj   +1 more source

Highly nonlinear dipolar exciton-polaritons in bilayer MoS2

Nature Communications, 2022
Dipolar excitons enable large nonlinear interaction but are usually hampered by their weak oscillator strength. Here, the authors demonstrate the strong light-matter coupling of interlayer dipolar excitons having unusually large oscillator strength in ...
Biswajit Datta, Mandeep Khatoniar, Prathmesh Deshmukh, Félix Thouin, Rezlind Bushati, Simone De Liberato, Stephane Kena Cohen, Vinod M. Menon   +7 more
doaj   +1 more source

Radiative Properties of Rb-Isoelectronic Technetium (Tc VII), Ruthenium (Ru VIII) and Rhodium (Rh IX) Ions for Astrophysical Applications

Atoms, 2022
In this work, we present high-accuracy spectroscopic properties, such as line strengths, transition probabilities and oscillator strengths for allowed transitions among nD3/2,5/2,n′S1/2 and n′P1/2,3/2(n=4,n′=5,6) states of Rb-isoelectronic Tc (Tc VII ...
Jyoti, Mandeep Kaur, Bindiya Arora
doaj   +1 more source

Tuning trion binding energy and oscillator strength in a laterally finite 2D system: CdSe nanoplatelets as a model system for trion properties.

Nanoscale, 2020
We present a theoretical study combined with experimental validations demonstrating that CdSe nanoplatelets are a model system to investigate the tunability of trions and excitons in laterally finite 2D semiconductors.
S. Ayari, Michael T. Quick, N. Owschimikow, Sotirios Christodoulou, G. Bertrand, M. Artemyev, I. Moreels, U. Woggon, S. Jaziri, A. Achtstein   +9 more
semanticscholar   +1 more source

Interlayer excitons in bilayer MoS2 with strong oscillator strength up to room temperature [PDF]

Physical review B, 2018
Coulomb bound electron-hole pairs, excitons, govern the optical properties of semiconducting transition-metal dichalcogenides like MoS 2 and WSe 2.
I. Gerber, E. Courtade, S. Shree, C. Robert, T. Taniguchi, Kenji Watanabe, A. Balocchi, P. Renucci, D. Lagarde, X. Marie, B. Urbaszek   +10 more
semanticscholar   +1 more source

Optical Gain of a Spherical InAs Quantum Dot under the Effects of the Intense Laser and Magnetic Fields

Crystals, 2023
In quantum dots, where confinement is strong, interactions between charge carriers play an essential role in the performance of semiconductor materials for optical gain.
Noreddine Aghoutane, Laura M. Pérez, David Laroze, Pablo Díaz, Miguel Rivas, Mohamed El-Yadri, El Mustapha Feddi   +6 more
doaj   +1 more source

Finite element 3D model of a double quantum ring: effects of electric and laser fields on the interband transition

New Journal of Physics, 2023
In this work, the changes in the energy of electrons and holes, oscillator strength and interband transition time when external fields are applied to a GaAs/AlGaAs semiconductor double ring grown by the droplet epitaxy technique are theoretically ...
A Radu, C Stan, D Bejan
doaj   +1 more source

Deciphering the Role of Positions 145 and 165 in Fluorescence Lifetime Shortening in the EGFP Variants

Biomolecules, 2020
The bright ultimately short lifetime enhanced emitter (BrUSLEE) green fluorescent protein, which differs from the enhanced green fluorescent protein (EGFP) in three mutations, exhibits an extremely short fluorescence lifetime at a relatively high ...
Anastasia V. Mamontova, Aleksander M. Shakhov, Konstantin A. Lukyanov, Alexey M. Bogdanov   +3 more
doaj   +1 more source

Experimental MoIIoscillator strengths [PDF]

Journal of Physics B: Atomic, Molecular and Optical Physics, 2001
Experimental branching fractions (BFs) of Mo (II,) ranging in wavelength from 1970 to 4370 Angstrom, have been measured from intensity calibrated spectra recorded with the Lund UV Fourier transform spectrometer (FTS). Radiative lifetimes for 10 levels have been measured using the method of laser-induced fluorescence (LIF).
Sikstrom, C. M, Pihlemark, H, Nilsson, H, Litzen, U, Johansson, S, Li, Z. S, Lundberg, Hans   +6 more
openaire   +3 more sources