activity
20162023
most citedControlled generation of a pn-junction in a waveguide integrated graphene photodetector

208 citations · 1.2k across the 19 of their papers we have counts for

collaborators

19 papers

physics.optics2023★ 1 cited

Nozaki-Bekki optical solitons

Nikola Opačak, Dmitry Kazakov, Lorenzo L. Columbo +8

Recent years witnessed rapid progress of chip-scale integrated optical frequency comb sources. Among them, two classes are particularly significant -- semiconductor Fabry-Perót las…

physics.optics2022

Pushing the room temperature continous-wave operation limit of GaSb-based interband cascade lasers beyond 6 m

Josephine Nauschütz, Hedwig Knötig, Robert Weih +4

We present GaSb-based interband cascade lasers emitting at a center wavelength of 6.12 m at 20C in continuous-wave operation up to a maximum operating temperature of 40$…

physics.optics2022★ 5 cited

Semiconductor ring laser frequency combs with active directional couplers

Dmitry Kazakov, Theodore P. Letsou, Maximilian Beiser +5

Rapid development of Fabry-Perot quantum cascade laser frequency combs has converted them from laboratory devices to key components of next-generation fast molecular spectrometers.…

physics.optics2022★ 16 cited

Synchronization of frequency combs by optical injection

Johannes Hillbrand, Mathieu Bertrand, Valentin Wittwer +8

Optical frequency combs based on semiconductor lasers are a promising technology for monolithic integration of dual-comb spectrometers. However, the stabilization of the offset fre…

physics.optics2021

Spectrally resolved linewidth enhancement factor of a semiconductor frequency comb

Nikola Opačak, Florian Pilat, Dmitry Kazakov +5

The linewidth enhancement factor (LEF) has recently moved into the spotlight of research on frequency comb generation in semiconductor lasers. Here we present a novel modulation ex…

physics.optics2021★ 23 cited

Engineering the spectral bandwidth of quantum cascade laser frequency combs

Maximilian Beiser, Nikola Opačak, Johannes Hillbrand +2

Quantum cascade lasers (QCLs) facilitate compact optical frequency comb sources that operate in the mid-infrared and terahertz spectral regions, where many molecules have their fun…