Englebert, Nicolas http://orcid.org/0000-0002-5170-9576
De Lucia, Francesco http://orcid.org/0000-0002-4220-5253
Parra-Rivas, Pedro
ArabĂ, Carlos Mas http://orcid.org/0000-0001-5564-5365
Sazio, Pier-John
Gorza, Simon-Pierre http://orcid.org/0000-0003-1750-0397
Leo, François http://orcid.org/0000-0001-7678-9245
Article History
Received: 25 January 2021
Accepted: 12 July 2021
First Online: 20 September 2021
Competing interests
: N.E., S.-P.G. and F.L. have filed patent applications on the active resonator design and its use for frequency conversion (European patent office, application number EP20188731.2). The remaining authors declare no competing interests.