155 citations · 439 across the 11 of their papers we have counts for
11 papers
Lasing on hybridized soliton frequency combs
Theodore P. Letsou, Dmitry Kazakov, Pawan Ratra +10
Coupling is an essential mechanism that drives complexity in natural systems, transforming single, non-interacting elements into intricate networks with rich physical properties. H…
Charge Transport in Interband Cascade Lasers: An Ab-Initio Self-Consistent Model
Andreas Windischhofer, Nikola Opačak, Benedikt Schwarz
Interband cascade lasers (ICLs) stand out due to their low threshold current and minimal power consumption, rendering them viable sources for compact and mobile devices in the mid-…
Driven bright solitons on a mid-infrared laser chip
Dmitry Kazakov, Theodore P. Letsou, Marco Piccardo +13
Despite the ongoing progress in integrated optical frequency comb technology, compact sources of short bright pulses in the mid-infrared wavelength range from 3 μm to 12 μm so far…
Impact of higher-order dispersion on frequency-modulated combs
Nikola Opačak, Barbara Schneider, Jérôme Faist +1
Frequency-modulated (FM) combs form spontaneously in free-running semiconductor lasers and possess a vast potential for spectroscopic applications. Despite recent progress in obtai…
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…
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…
Frequency comb generation by Bloch gain induced giant Kerr nonlinearity
Nikola Opačak, Sandro Dal Cin, Johannes Hillbrand +1
Optical nonlinearities are known to provide a coherent coupling between the amplitude and phase of the light, which can result in the formation of periodic waveforms. Lasers that e…
Unifying frequency combs in active and passive cavities: Temporal solitons in externally-driven ring lasers
L. Columbo, M. Piccardo, F. Prati +8
Frequency combs have become a prominent research area in optics. Of particular interest as integrated comb technology are chip-scale sources, such as semiconductor lasers and micro…
Mode-locked ultrashort pulses from an 8 m wavelength semiconductor laser
Johannes Hillbrand, Nikola Opacak, Marco Piccardo +4
Quantum cascade lasers (QCL) have revolutionized the generation of mid-infrared light. Yet, the ultrafast carrier transport in mid-infrared QCLs has so far constituted a seemingly…
In-phase and anti-phase synchronization in a laser frequency comb
Johannes Hillbrand, Dominik Auth, Marco Piccardo +5
Coupled clocks are a classic example of a synchronization system leading to periodic collective oscillations. This phenomenon already attracted the attention of Christian Huygens b…
Theory of frequency modulated combs in lasers with spatial hole burning, dispersion and Kerr
Nikola Opačak, Benedikt Schwarz
Frequency modulated (FM) frequency combs constitute an exciting alternative to generate equidistant spectra. The full set of Maxwell-Bloch equations is reduced to a single master e…