Year: 2025
Type: article
Abstract: 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.
Source: Nanophotonics
Authors: Sebastian Gloor, Adrian Weisenhorn, Léo Hetier, Urban Senica, Richard Maulini, Mattias Beck, Jérôme Faist, Giacomo Scalari
Institutions: ETH Zurich, Alpes Lasers (Switzerland), Harvard University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,995
OpenAlex ID: W4411842694