Abstract

We present quantum cascade laser (QCL) frequency comb devices with engineered waveguides for managing the dispersion. The QCL waveguide consists of multiple sections with different waveguide widths. The narrow and wide sections of the waveguide are designed in a way to compensate the group velocity dispersion (GVD) of each other and thereby produce a flat and slightly negative GVD for the QCL. The QCL exhibits continuous comb operation over a large part of the dynamic range of the laser. Strong and narrow-linewidth intermode beatnotes are achieved in a more than 300 mA wide operation current range. The comb device also features considerably high output power (${\gt}{380}\;{\rm mW}$) and wide optical bandwidth (${\gt}{55}\;{{\rm cm}^{- 1}}$).

© 2020 Optical Society of America

Plasmon-enhanced waveguide for dispersion compensation in mid-infrared quantum cascade laser frequency combs

Yves Bidaux, Ilia Sergachev, Wolf Wuester, Richard Maulini, Tobias Gresch, Alfredo Bismuto, Stéphane Blaser, Antoine Muller, and Jérôme Faist
Opt. Lett. 42(8) 1604-1607 (2017)

Mid-infrared frequency comb from a ring quantum cascade laser

Bo Meng, Matthew Singleton, Mehran Shahmohammadi, Filippos Kapsalidis, Ruijun Wang, Mattias Beck, and Jérôme Faist
Optica 7(2) 162-167 (2020)

Mid-infrared frequency combs at 10 GHz

Abijith S. Kowligy, David R. Carlson, Daniel D. Hickstein, Henry Timmers, Alexander J. Lind, Peter G. Schunemann, Scott B. Papp, and Scott A. Diddams
Opt. Lett. 45(13) 3677-3680 (2020)

Near-infrared frequency comb generation in mid-infrared interband cascade lasers

Lukasz A. Sterczewski, Mahmood Bagheri, Clifford Frez, Chadwick L. Canedy, Igor Vurgaftman, Mijin Kim, Chul Soo Kim, Charles D. Merritt, William W. Bewley, and Jerry R. Meyer
Opt. Lett. 44(23) 5828-5831 (2019)

High performance quantum cascade laser frequency combs at λ ∼ 6 μm based on plasmon-enhanced dispersion compensation

Sargis Hakobyan, Richard Maulini, Stéphane Blaser, Tobias Gresch, and Antoine Muller
Opt. Express 28(14) 20714-20727 (2020)