Picosecond pulses from a mid-infrared interband cascade laser

Johannes Hillbrand, Maximilian Beiser, Aaron Maxwell Andrews, Hermann Detz, Robert Weih, Anne Schade, Sven Höfling, Gottfried Strasser, Benedikt Schwarz

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The generation of mid-infrared pulses in monolithic and electrically pumped devices is of great interest for mobile spectroscopic instruments. The gain dynamics of interband cascade lasers (ICL) are promising for mode-locked operation at low threshold currents. Here, we present conclusive evidence for the generation of picosecond pulses in ICLs via active mode-locking. At small modulation power, the ICL operates in a linearly chirped frequency comb regime characterized by strong frequency modulation. Upon increasing the modulation amplitude, the chirp decreases until broad pulses are formed. Careful tuning of the modulation frequency minimizes the remaining chirp and leads to the generation of 3.2 ps pulses.
Original languageEnglish
Pages (from-to)1334-1337
Number of pages4
JournalOptica
Volume6
Issue number10
Early online date10 Oct 2019
DOIs
Publication statusPublished - 20 Oct 2019

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