Titanium Nano-Antenna for High-Power Pulsed Operation

Author

Mironov, Evgeny G. ; Ziyuan Li ; Hattori, Haroldo T. ; Vora, K. ; Tan, H.H. ; Jagadish, C.

Author_Institution

Sch. of Eng. & Inf. Technol., Univ. of New South Wales, Canberra, ACT, Australia

Volume

31

Issue

15

fYear

2013

fDate

Aug.1, 2013

Firstpage

2459

Lastpage

2466

Abstract

While plasmonic nano-antennas can produce intense electric fields in a very small area, in general, these devices cannot handle high power, because of their small footprints. In order to increase the maximum peak power that these devices can withstand, they can be driven by nano-second pulses from a larger diameter Q-switched laser, which reduces the fluence reaching the devices, thus avoiding their destruction. Furthermore, we show that an increase in the power density capacity of the nano-antennas can be achieved by replacing gold with titanium: more than 18 dB greater power density can be handled by titanium based nano-antennas without significant reduction in their electric field enhancement capabilities.

Keywords

Q-switching; antennas; nanophotonics; plasmonics; titanium; Q-switched laser; Ti; electric field enhancement capability; high-power pulsed operation; nanosecond pulse; plasmonic nanoantenna; power density capacity; titanium nanoantenna; Gold; Heating; Lasers; Materials; Plasmons; Titanium; ${rm Q}$-switched laser; Nano-photonics; plasmonic nano-antennas; plasmonics;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2013.2261281

Filename

6512578