Abstract
We measured gain spectra of highly uniform current-injection T-shaped quantum wire lasers and investigated the physics of gain-spectral-shape modulation due to strong Coulomb interactions by comparing current-injection and optical-pumping measurements and additional calculations including screened Coulomb interaction. We found remarkable features for current injection: redshifts and long high- and low-energy tails of the gain peak. These characteristic current-injection features were ascribed to band-gap renormalization, state-filling, and carrier-carrier scattering inherent to charge-imbalanced electron-hole systems (
Original language | English (US) |
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Pages (from-to) | 20-23 |
Number of pages | 4 |
Journal | Physica Status Solidi (C) Current Topics in Solid State Physics |
Volume | 8 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2011 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
Keywords
- Charge imbalance
- Optical gain
- Quantum wire
- Semiconductor laser