On-chip dual-comb based on quantum cascade laser frequency combs
Abstract
Dual-comb spectroscopy is emerging as an appealing application of mid-infrared frequency combs for high-resolution molecular spectroscopy, as it leverages on the unique coherence properties of frequency combs. Here, we present an on-chip dual-comb source based on mid-infrared quantum cascade laser frequency combs. Control of the combs repetition and offset frequencies is obtained by integrating micro-heaters next to each laser. We show that a full control of the dual-comb system is possible, by measuring a multi-heterodyne beating corresponding to an optical bandwidth of 32 cm−1 centered at 1330 cm−1 (7.52 μm), demonstrating that this device represents a critical step towards compact dual-comb systems.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 21, 2015
- Source ID
- 10.1063/1.4938213
Entities
People
- A. Hugi
- D. Kazakov
- Gustavo Villares
- Jean Wolf
- Jérôme Faist
- M. J. Süess
- Mark Beck
Organizations
- Defense Advanced Research Projects Agency
- ETH Zurich
- Swiss Federal Council