Thermally Tunable Quantum Cascade Laser With an External Germanium-on-SOI Distributed Bragg Reflector

Autor: Stefan Hugger, Christian Schilling, Ana Radosavljević, Sanja Radosavljevic, Ralf Ostendorf, Bart Kuyken, Gunther Roelkens
Přispěvatelé: Publica
Rok vydání: 2019
Předmět:
Zdroj: IEEE Journal of Selected Topics in Quantum Electronics. 25:1-7
ISSN: 1558-4542
1077-260X
DOI: 10.1109/jstqe.2019.2933784
Popis: Quantum cascade lasers (QCLs) are essential components for mid-infrared optical spectroscopy. Currently, widely tunable QCLs are using an external diffraction grating to tune the laser wavelength. In this paper we present a compact tunable QCL that is thermally tuned by a distributed Bragg reflector (DBR) implemented on a Germanium-on-SOI (Ge-on-SOI) waveguide circuit. The 5.1x $\mu \rm m$ wavelength laser, operating in pulsed mode at room temperature, is continuously tuned over 50 nm.
Databáze: OpenAIRE