e-journal

Ultrafast Electrically Tunable Polaritonic Metasurfaces

---

Electrically tunable mid-infrared metasurfaces with nanosecond response time and broad tuning range are reported. Electrical tuning is achieved by employing strong polaritonic coupling of electromagnetic modes in metallic
nanoresonators with voltage-tunable inter-subband transitions in semiconductor heterostructures, tailored for a giant quantum-confi ned Stark effect.Experimentally, a 220-nm-thick multi-quantum-well semiconductor layer is sandwiched between a ground plane and a metal layer patterned with plasmonic nanoresonators. Approximately 300 nm absorption peak tuning and over 30% absorption change are demonstrated at around 7 μm wavelength at normal incidence by changing the DC bias voltage from 0 to +5 V. Fast refl ectivity modulation of the metasurface is shown with a response time less
than ∼10 ns using bias voltage modulation between +2 V and +4 V. Since the bias affects the optical response at the individual nanoresonator level, this approach may be used to create metasurfaces for ultrafast electrical wavefront
tuning and beam steering.

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Adv. Optical Mater.

No. Panggil

-

Penerbit

: WILEY-VCH Verlag GmbH & Co. KGaA., 2014

Deskripsi Fisik

Adv. Optical Mater. 2014, 2, 1057–1063

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar