Compact, thermoelectrically cooled surface emitting THz QCLs operating in an HHL housing
Terahertz (THz) technology is experiencing rapid progress thanks to recent advancements in sources and detectors. We present a 3.9 THz quantum cascade laser operating in a compact high heat load (HHL) housing. The device features a loop mirror back reflector and a dry-etched surface-emitting antenna that shapes the far-field pattern to optimize coupling to user-defined devices. A peak power of 1.8 mW and average power of 4.5 μW at 185 K are measured experimentally, and the device output is easily detected with a room-temperature THz camera.
Authors
- Léo Hetier
- Giacomo Scalari (ORCID: https://orcid.org/0000-0003-4028-803X)
- Jérôme Faist (ORCID: https://orcid.org/0000-0003-4429-7988)
- Richard Maulini (ORCID: https://orcid.org/0000-0002-6568-0823)
- Mattias Beck (ORCID: https://orcid.org/0000-0002-0260-5797)
- A. L. Weisenhorn
- Urban Senica (ORCID: https://orcid.org/0000-0002-3025-5042)
- Sebastian Gloor (ORCID: https://orcid.org/0009-0001-3060-9189)
Institutions
- Harvard University Press (US)
- ETH Zurich (CH)
- Alpes Lasers (Switzerland) (CH)
Publication Details
- Journal
- Nanophotonics
- Published
- 2025-06-29
- DOI
- https://doi.org/10.1515/nanoph-2025-0185
- Citations
- 1
- Primary Topic
- Spectroscopy and Laser Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.76
Funders
- National Science Foundation
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Innosuisse - Schweizerische Agentur für Innovationsförderung
- Staatssekretariat für Bildung, Forschung und Innovation