Mid-infrared femtosecond pulses from a quantum cascade laser
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Date
2022
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
In recent years, quantum cascade lasers have matured to become compact, powerful sources of coherent mid infrared light. Yet, the ultrafast carrier dynamics in these sources has so far restricted the formation of high intensity ultrashort pulses. In this work, we demonstrate the formation of ~ 630 fs QCL pulses with a peak power of ~ 4.3 W. We break the picosecond barrier in an approach similar to chirped pulse amplification, where we externally recompress the maximally chirped output of a quantum cascade laser frequency comb. Ultrashort pulse formation is confirmed with a novel asynchronous optical sampling technique. These results emphasise the potential of quantum cascade lasers also as sources for non-linear experiments in the mid-infrared.
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Publication status
published
External links
Book title
Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII
Journal / series
Volume
11991
Pages / Article No.
1199106
Publisher
SPIE
Event
SPIE LASE 2022
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Femtosecond pulses; mid-infrared; quantum cascade laser; frequency combs; pulse compression; asynchronous upconversion sampling
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
Notes
Funding
176584 - High-resolution QCL frequency comb spectrometer for the detection of trace gases and their isotopes (SNF)
165639 - Monolithic, self referenced quantum cascade laser frequency comb (SNF)
820419 - Quantum simulation and entanglement engineering in quantum cascade laser frequency combs (EC)
165639 - Monolithic, self referenced quantum cascade laser frequency comb (SNF)
820419 - Quantum simulation and entanglement engineering in quantum cascade laser frequency combs (EC)