Field-enhancing tapered planarized waveguides for THz quantum cascade laser frequency combs

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Autor(in)
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Datum
2022-10-13Typ
- Other Conference Item
ETH Bibliographie
yes
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Abstract
We present a new planarized waveguide geometry for THz quantum cascade laser frequency combs with improved waveguide losses, RF and thermal dissipation properties. Ridge devices display broadband free-running comb states, and the THz emission can be further broadened by RF injection. Tapered waveguide devices feature a strong field-enhancement effect, which results in an improved comb performance. This includes free-running comb states with strong single beatnotes up to nearly -30 dBm at 90 K, almost three orders of magnitude stronger than for ridge devices. Improved comb operation is maintained also for high operating temperatures, up to 115 K. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000578270Publikationsstatus
publishedExterne Links
Buchtitel
EOS Annual Meeting (EOSAM 2022)Zeitschrift / Serie
EPJ Web of ConferencesBand
Seiten / Artikelnummer
Verlag
EDP SciencesKonferenz
Organisationseinheit
03759 - Faist, Jérôme / Faist, Jérôme
ETH Bibliographie
yes
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