Ultrafast optical switching in Si-metasurfaces for wireless and space optical communication

K. Ch Georgiev; A. A. Trifonov; K. Z. Kamali; D. Neshev; G. Crotti; G. D. Valle; L. S. Petrov; I. Ch Buchvarov

Ultrafast optical switching in Si-metasurfaces for wireless and space optical communication

K. Ch Georgiev, A. A. Trifonov, K. Z. Kamali, D. Neshev, G. Crotti, G. D. Valle, L. S. Petrov, I. Ch Buchvarov^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

We demonstrate ultra-fast all-optical switching based on the implementation of a metasurface-based laser dichroic mirror design. The crystalline silicon metasurfaces with 100 nm thickness on sapphire substrates are fabricated using established processes in Si-semiconductor industry. Under weak-pump excitation, relative transmittance changes of up to 100% are possible for characteristic times ranging from 25 to 120 ps. A carrier-driven absolute amplitude modulation of over 72% is observed at 102-120 ps relaxation times. A CW 1030 nm laser’s beam modulation for free space communication is verified in a laboratory environment.

Original language	English
Pages (from-to)	998-999
Number of pages	2
Journal	International Conference on Metamaterials, Photonic Crystals and Plasmonics
Publication status	Published - 2023
Externally published	Yes
Event	13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023 - Paris, France Duration: 18 Jul 2023 → 21 Jul 2023 Conference number: 13th https://metaconferences.org/META23/files/meta23_proceedings.pdf https://metaconferences.org/META23/index.php/META/proceeding

Cite this

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title = "Ultrafast optical switching in Si-metasurfaces for wireless and space optical communication",

abstract = "We demonstrate ultra-fast all-optical switching based on the implementation of a metasurface-based laser dichroic mirror design. The crystalline silicon metasurfaces with 100 nm thickness on sapphire substrates are fabricated using established processes in Si-semiconductor industry. Under weak-pump excitation, relative transmittance changes of up to 100% are possible for characteristic times ranging from 25 to 120 ps. A carrier-driven absolute amplitude modulation of over 72% is observed at 102-120 ps relaxation times. A CW 1030 nm laser{\textquoteright}s beam modulation for free space communication is verified in a laboratory environment.",

author = "Georgiev, {K. Ch} and Trifonov, {A. A.} and Kamali, {K. Z.} and D. Neshev and G. Crotti and Valle, {G. D.} and Petrov, {L. S.} and Buchvarov, {I. Ch}",

note = "Publisher Copyright: {\textcopyright} 2023, META Conference. All rights reserved.; 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023, META 2023 ; Conference date: 18-07-2023 Through 21-07-2023",

year = "2023",

language = "English",

pages = "998--999",

journal = "International Conference on Metamaterials, Photonic Crystals and Plasmonics",

issn = "2429-1390",

publisher = "META Conference",

url = "https://metaconferences.org/META23/files/meta23_proceedings.pdf, https://metaconferences.org/META23/index.php/META/proceeding",

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TY - JOUR

T1 - Ultrafast optical switching in Si-metasurfaces for wireless and space optical communication

AU - Georgiev, K. Ch

AU - Trifonov, A. A.

AU - Kamali, K. Z.

AU - Neshev, D.

AU - Crotti, G.

AU - Valle, G. D.

AU - Petrov, L. S.

AU - Buchvarov, I. Ch

N1 - Conference code: 13th

PY - 2023

Y1 - 2023

N2 - We demonstrate ultra-fast all-optical switching based on the implementation of a metasurface-based laser dichroic mirror design. The crystalline silicon metasurfaces with 100 nm thickness on sapphire substrates are fabricated using established processes in Si-semiconductor industry. Under weak-pump excitation, relative transmittance changes of up to 100% are possible for characteristic times ranging from 25 to 120 ps. A carrier-driven absolute amplitude modulation of over 72% is observed at 102-120 ps relaxation times. A CW 1030 nm laser’s beam modulation for free space communication is verified in a laboratory environment.

AB - We demonstrate ultra-fast all-optical switching based on the implementation of a metasurface-based laser dichroic mirror design. The crystalline silicon metasurfaces with 100 nm thickness on sapphire substrates are fabricated using established processes in Si-semiconductor industry. Under weak-pump excitation, relative transmittance changes of up to 100% are possible for characteristic times ranging from 25 to 120 ps. A carrier-driven absolute amplitude modulation of over 72% is observed at 102-120 ps relaxation times. A CW 1030 nm laser’s beam modulation for free space communication is verified in a laboratory environment.

UR - http://www.scopus.com/inward/record.url?scp=85174580988&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85174580988

SN - 2429-1390

SP - 998

EP - 999

JO - International Conference on Metamaterials, Photonic Crystals and Plasmonics

JF - International Conference on Metamaterials, Photonic Crystals and Plasmonics

T2 - 13th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2023

Y2 - 18 July 2023 through 21 July 2023

ER -

Ultrafast optical switching in Si-metasurfaces for wireless and space optical communication

Abstract

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