Ultrafast saturable absorption in topological insulator Bi_2SeTe_2 nanosheets | Zendy

Hang Zhang | Zendy; Xin He | Zendy; Wei Lin | Zendy; Rongfei Wei | Zendy; Fangteng Zhang | Zendy; Xi Du | Zendy; Guoping Dong | Zendy; Jianrong Qiu | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Ultrafast saturable absorption in topological insulator Bi_2SeTe_2 nanosheets

Author(s) -

Hang Zhang,

Xin He,

Wei Lin,

Rongfei Wei,

Fangteng Zhang,

Xi Du,

Guoping Dong,

Jianrong Qiu

Publication year - 2015

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.013376

Subject(s) - topological insulator , ultrashort pulse , materials science , saturable absorption , optics , scattering , saturation (graph theory) , absorption (acoustics) , insulator (electricity) , optoelectronics , laser , fiber laser , physics , condensed matter physics , wavelength , mathematics , combinatorics , composite material

Topological insulator (TI) Bi2SeTe2 nanosheets with very regular hexagonal morphology were synthesized by a hydrothermal route. Open aperture (OA) z-scan method was performed to measure the saturable absorption (SA) characteristics of the as-prepared TI Bi2SeTe2 nanosheets. The measured modulation depth, saturation intensity and nonsaturable loss of the sample were 61.9%, 4.46 GW/cm2 and 4.5% respectively. An ultrafast intraband scattering time of ~50 fs was obtained through simulating the SA curve, which indicates the TI Bi2SeTe2 nanosheets may be a good candidate for mode-locking material.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research