WG3.2 - FREQUENCY MODULATED COMBS IN SEMICONDUCTOR LASERS
- B. Schwarz (AT) TU Wien
- N. Opacak (AT) TU Wien
- J. Hillbrand (AT) TU Wien
- M. Beiser (AT) TU Wien
- G. Strasser (AT) TU Wien
- R. Weih (DE) Nanoplus
- A. Schade (DE) University Würzburg
- S. Höfling (DE) University Würzburg
- D. Auth (DE) TU Darmstadt
- S. Breuer (DE) TU Darmstadt
- M. Piccardo (US) Harvard University
- F. Capasso (US) Harvard University
Abstract
Abstract
While frequency combs are mostly connected to short pulse emission, it is not the only way to generate a comb. Quantum or interband cascade lasers for example show a completely different behavior. Here, we give an overview of this exciting phenomena including theory and experiments.
WG3.3 - DIRECT SEMICONDUCTOR DIODE LASER MODE ENGINEERING AND WAVEGUIDE DESIGN
Abstract
Abstract
Starting from the desired modal field we solve for the supporting waveguide refractive index structure within a semiconductor diode laser. Specifically we analyze the problem of maximizing far-field on-axis intensity and discuss the practical aspects of waveguide design.
WG3.4 - LINEWIDTH BROADENING FACTOR OF AN INTERBAND CASCADE LASER OPERATED ABOVE THRESHOLD
Abstract
Abstract
We show that the linewidth broadening factor of a mid-infrared interband cascade laser operated above the lasing threshold is around 2.0, which does not increase with increasing pump current. The linewidth broadening factor is extracted from the self-mixing interferometry technique.