TiO<sub>2</sub>-SiO<sub>2</sub> Nanocomposite Saturable Absorber for Ultrafast Photonics

TiO<sub>2</sub>-SiO<sub>2</sub> Nanocomposite Saturable Absorber for Ultrafast Photonics

A tapered microfiber decorated with titanium dioxide-silicon dioxide nanocomposite saturable absorber (TiO<sub>2</sub>-SiO<sub>2</sub>-SA) is demonstrated via alkali fusion method and spin-coating technique. The TiO<sub>2</sub>-SiO<sub>2</sub>-SA exhib...

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Bibliographic Details
Main Authors: Norita Mohd Yusoff, Eng Khoon Ng, Natrah Shafiqah Rosli, Che Azurahanim Che Abdullah, Nelydia Md. Yusoff, Mohd Adzir Mahdi
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Photonics Journal
Subjects:
Erbium-doped fiber laser
mode-locked
saturable absorber
silicon dioxide
titanium dioxide
Online Access:https://ieeexplore.ieee.org/document/10018299/
Description
Summary:A tapered microfiber decorated with titanium dioxide-silicon dioxide nanocomposite saturable absorber (TiO<sub>2</sub>-SiO<sub>2</sub>-SA) is demonstrated via alkali fusion method and spin-coating technique. The TiO<sub>2</sub>-SiO<sub>2</sub>-SA exhibited 17.1&#x0025; modulation depth, 31.7 &#x00B5;J&#x002F;cm<sup>2</sup> saturation fluence and 35.4&#x0025; non-saturable loss. The TiO<sub>2</sub>-SiO<sub>2</sub>-SA was able to generate a pulse duration of 797 fs at a repetition rate of 10.39 MHz and an average output power of 16.57 mW at 1.56 &#x03BC;m. This work presents an enhanced pulse duration within titanium-based saturable absorbers. The high damage threshold of beyond 24.82 GW&#x002F;cm<sup>2</sup> and excellent stability are believed to have opened a new route of using nanomaterials derived from waste product for next generation ultrafast photonic applications.
ISSN:1943-0655

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