𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Photoluminescence and Pump–Probe Spectroscopy of Bragg and Off-Bragg Quantum Wells

✍ Scribed by Ch. Spiegelberg; H.M. Gibbs; J.P. Prineas; C. Ell; P. Brick; E.S. Lee; G. Khitrova; V.S. Zapasskii; M. Hübner; S.W. Koch

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
155 KB
Volume
221
Category
Article
ISSN
0370-1972

No coin nor oath required. For personal study only.

✦ Synopsis

In this paper we report on the investigation of radiatively coupled quantum wells in periodic quantum well (PQW) structures. The experimentally determined mode structure and reflectivity spectra at the Bragg resonance as well as off Bragg can be successfully modeled by linear dispersion theory. Measurements of the photoluminescence in a magnetic field show increased mode splitting characteristic of the enhanced radiative broadening of the excitonic resonance. In pump±probe measurements of the nonlinear transmission near the Bragg resonance, we find a large increase in transmission at the low energy side of exciton resonance. This optical gain is observed only for the duration of the pump pulse.

📜 SIMILAR VOLUMES

Modulated resonant Raman and photolumine
Modulated resonant Raman and photoluminescence spectroscopy of Bragg confined asymmetric coupled quantum wells
✍ M Levy; R Kapon; A Sa'ar; R Beserman; V Thierry-Mieg; R Planel 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 171 KB

Electronic Bragg mirrors were used to conÿne carriers at energy levels above the barrier height in asymmetric coupled quantum wells. Two classes of above barrier states were resolved by using photoluminescence, photoluminescence excitation and modulated resonant Raman spectroscopy. The ÿrst class is

Photoluminescence Excitation Spectroscop
Photoluminescence Excitation Spectroscopy of MBE Grown InGaN Quantum Wells and Quantum Boxes
✍ M.E. White; K.P. O'Donnell; R.W. Martin; C.J. Deatcher; B. Damilano; N. Grandjea 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 87 KB 👁 2 views

Photoluminescence excitation (PLE) spectroscopy was carried out to investigate the excitation/ emission cycle of MBE grown InGaN quantum structures. Quantum well and Stranski-Krastanov type quantum box samples were chosen that emit from blue to red. The bandgap energy (E g ), determined from the PLE

Morphological and optical anisotropy of
Morphological and optical anisotropy of quantum dots probed by magneto-tunneling and photoluminescence-polarization spectroscopy
✍ A Patanè; P.C Main; L Eaves; A Levin; M Henini; G Hill 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 158 KB

We use magneto-tunneling spectroscopy to investigate the form of the wave function of the conÿned electron states in self-assembled InAs quantum dots grown on (1 0 0)-and (3 1 1)B-oriented GaAs substrates. For both orientations, the electron wave function has a biaxial symmetry in the growth plane a