In-situ frequency comb shaping by multi-frequency injection in fast-gain lasers
METADATA ONLY
Loading...
Date
2025/08/24
Publication Type
Other Conference Item
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
Shaping of the spectrum of frequency comb sources is highly beneficial for application that require controllable optical source, such as ranging or communications. However, efficient in-situ reconfiguration of the spectrum is a challenge. We demonstrate spectral shaping of frequency combs in fast-gain active devices by engineering an Aharonov-Bohm phase in a synthetic frequency lattice. By modulating a fast gain circular laser at its resonance and twice this frequency with a relative phase, we created a triangular ladder in the modal space, where the phase added with staggered phase flux. This broke the time-reversal symmetry in the system, allowing for non-trivial gauge fields that manipulate the light. This enable the control over the frequency lattice dynamics, enabling full bandwidth tuning of a strong central lobe in a Quantum Cascade Laser comb. This paves the wave to new efficient and simple reconfigurable optical frequency comb sources.
Permanent link
Publication status
unpublished
External links
Editor
Book title
Journal / series
Volume
Pages / Article No.
Publisher
Event
13th European Optical Society Annual Meeting (EOSAM 2025)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
Notes
Conference lecture held on August 28, 2025 as part of TOM Ultrafast S3: Ultrafast Phenomena