Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Multiresonant metasurfaces for arbitrarily-broadband pulse chirping and dispersion compensation
Δημιουργός/Συγγραφέας:	[EL] Τσιλιπάκος Οδυσσέας[EN] Tsilipakos, Odysseas Koschny, Thomas
Εκδότης:	American Physical Society
Ημερομηνία:	2023-04-10
Γλώσσα:	Αγγλικά
ISSN:	2469-9950 2469-9969
DOI:	10.1103/PhysRevB.107.165408
Περίληψη:	We show that ultrathin metasurfaces with a specific multiresonant response can enable simultaneously arbitrarily-strong and arbitrarily-broadband dispersion compensation, pulse (de-)chirping and compression or broadening. This breakthrough overcomes the fundamental limitations of both conventional non-resonant approaches (bulky) and modern singly-resonant metasurfaces (narrowband) for quadratic phase manipulations of electromagnetic signals. The required non-uniform trains of resonances in the electric and magnetic sheet conductivities that completely control phase delay, group delay, and chirp, are rigorously derived and the limitations imposed by fundamental physical constraints are thoroughly discussed. Subsequently, a practical, truncated approximation by finite sequences of physically-realizable linear resonances is constructed and the associated error is quantified. By appropriate spectral ordering of the resonances, operation can be achieved either in transmission or reflection mode, enabling full space coverage. The proposed concept is not limited to dispersion compensation, but introduces a generic and powerful ultrathin platform for the spatio-temporal control of broadband real-world signals with a myriad of applications in modern optics, microwave photonics, radar and communication systems.
Τίτλος πηγής δημοσίευσης:	Physical Review B
Τόμος/Κεφάλαιο:	107
Τεύχος:	16
Θεματική Κατηγορία:	[EL] Εφαρμοσμένη οπτική. Φωτονική[EN] Applied optics. Photonics [EL] Φυσική[EN] Physics
Λέξεις-Κλειδιά:	metasurfaces optics multiple resonances communications dipsersion compensation pulse chirping broadband
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	©2023 American Physical Society
Ηλεκτρονική διεύθυνση με ανοικτή πρόσβαση (link):	http://arxiv.org/pdf/2303.17214v1
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://journals.aps.org/prb/abstract/10.1103/PhysRevB.107.165408
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://journals.aps.org/prb/
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο