An interband cascade laser based heterodyne detector with integrated optical amplifier and local oscillator.

ABSTRACT: Heterodyne detection based on interband cascade lasers (ICL) has been demonstrated in a wide range of different applications. However, it is still often limited to bulky tabletop systems using individual components such as dual laser setups, beam shaping elements, and discrete detectors. In this work, a versatile integrated ICL platform is investigated for tackling this issue. A RF-optimized, two-section ICL approach is employed, consisting of a short section typically used for efficient modulation of the cavity field and a long gain section. Such a laser is operated in reversed mode, with the entire Fabry-Pérot waveguide utilized as a semiconductor optical amplifier (SOA) and the electrically separated short section as detector. Furthermore, a racetrack cavity is introduced as on-chip sin

SUBMITTER: Dal Cin S 

PROVIDER: S-EPMC11052533 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature