Double Tunneling-Injection Quantum Dot Lasers for High-Speed Operation
Abstract
1) The upper limit for the modulation bandwidth of double tunneling-injection (DTI) quantum dot (QD) lasers has been calculated. The optimum cavity length, surface density of QDs, and dc injection current density, maximizing the modulation bandwidth, have been shown to exist. The higher the dc injection current density, the smaller should be the optimum values of the cavity length and the surface density of QDs. While the maximum bandwidth has been shown to be the same in DTI and conventional QD lasers and unaffected by the differential gain, the optimum dc current density, being inversely proportional to the differential gain, is lower in a DTI laser.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 25, 2021
- Source ID
- W911NF1310445
Entities
People
- Levon V Asryan
Organizations
- Army Contracting Command
- United States Army
- Virginia Tech