We are pleased to announce and invite you to one of our weekly online zoom events.
 

High power ultrashort pulses from an 8 μm semiconductor laser

In recent years, quantum cascade lasers QCLs 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. The QCL's maximally chirped output is compensated externally using a grating compressor. Ultrashort pulse formation is confirmed with a novel asynchronous optical sampling technique. These results emphasise the potential of QCLs also as sources for non-linear experiments in the mid-infrared.

Speaker

Dr. Philipp Täschler
2017 BSc Physics ETH
2019 MSc Physics ETH
2019 - Doctorate at ETH in group of Prof. Dr. Jérôme Faist

Moderator

Dr. Christian Bosshard, Managing director Swissphotonics
Dr. Christian Bosshard received his degree in Physics (1986) and his doctorate (1991, Silver medal award) from ETH. From 2001-2021 he was working at CSEM, first as Section Head and then as Vice President and Head Photonics. Since 2013 he is Managing Director of Swissphotonics. Christian is a Fellow of Optica, Board Member of EPIC, and Member of the Board of the University of Basel.

Date
Tuesday, 10 May 2022

Time
12:00 - 12:45

Software
Zoom

Costs
free of charge

Registration only necessary once
This event series requires registration (see link above). We will send you the access information (Zoom-link and ID) by email after the registration. As the Zoom link remains the same every week, you do not need to register again for the following meetings.

Deadline for registration
9 May 2022, 12.00 am


Contact
Dr. Philipp Täschler
ETH Zürich, Institute for Quantum Electronics IQE

Contact Swissphotonics
Dr. Christian Bosshard
Managing Director Swissphotonics
+41 79 405 18 26

20 March 2022, Beni Muller + Iris Bollinger