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Surface-emitting THz quantum cascade laser frequency comb with tunable external mirror dispersion compensation

Authors :
Digiorgio Valerio
Senica Urban
Micheletti Paolo
Beck Mattias
Faist Jérôme
Scalari Giacomo
Source :
EPJ Web of Conferences, Vol 287, p 07028 (2023)
Publication Year :
2023
Publisher :
EDP Sciences, 2023.

Abstract

We present a surface emitting THz quantum cascade laser frequency comb with an adjustable chromatic dispersion compensation via a mechanically tunable GTI cavity. Surface emission and high optical feedback into the laser cavity are achieved by a planarized ridge waveguide design with low reflectivity facets and two broadband patch array antennas for coupling to an external mirror (back side) and for power extraction (front side). We demonstrate direct and reproducible manipulation of the frequency comb state, specifically the comb stability and beatnote frequency tuning, by controlling the position of an external movable mirror.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
2100014X
Volume :
287
Database :
Directory of Open Access Journals
Journal :
EPJ Web of Conferences
Publication Type :
Academic Journal
Accession number :
edsdoj.f5428425a9e74c179dc78668420fac71
Document Type :
article
Full Text :
https://doi.org/10.1051/epjconf/202328707028