| Issue |
EPJ Web Conf.
Volume 287, 2023
EOS Annual Meeting (EOSAM 2023)
|
|
|---|---|---|
| Article Number | 07011 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting (TOM) 7- Optical Frequency Combs | |
| DOI | https://doi.org/10.1051/epjconf/202328707011 | |
| Published online | 18 October 2023 | |
https://doi.org/10.1051/epjconf/202328707011
Broadband and fast frequency chirped FTIR spectroscopy with strongly modulated quantum cascade lasers
1 Institute for Quantum Electronics, ETH Zurich, CH-8093, Switzerland
2 Alpes Lasers, Avenue des Pâquiers 1, 2072 St Blaise, Switzerland
* Corresponding author: acargioli@phys.ethz.ch
Published online: 18 October 2023
While the opportunity to perform fast and broadband spectroscopy in the Mid-IR portion of the electromagnetic spectrum is very appealing, it requires the use of compatible light-sources. Here, we strongly modulate a Mid-Infrared Quantum Cascade Laser at a frequency in the RF domain, which is low compared to the natural repetition frequency of the device. In this way, we demonstrate that it is possible to obtain an emission bandwidth of up to 250cm-1. Finally, we employ it as a light source in an FTIR based on a rotational delay line, performing fast and broadband FTIR spectroscopy.
© The Authors, published by EDP Sciences, 2023
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