Abstract
We propose a quantum-dot version of the quantum-well cascade laser of Faist et al. The elimination of single phonon decays by the three-dimensional confinement implies a several order-of-magnitude reduction in the threshold current. The requirements on dot size (10-20 nm) and on dot density and uniformity [one coupled pair of dots per (200 nm 3) with 5% nonuniformity] are dose to current technology.
Original language | English (US) |
---|---|
Pages (from-to) | 1170-1173 |
Number of pages | 4 |
Journal | IEEE Journal of Quantum Electronics |
Volume | 33 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1997 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering
Keywords
- CW lasers
- Proposals
- Quantum-well lasers
- Semiconductor lasers
- Submillimeter wave lasers