Share Email Print
cover

Proceedings Paper

Theoretical analysis of a novel ultrasound generator on an optical fiber tip
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A novel ultrasound generator consisting of a single mode optical fiber with a layer of gold nanoparticles on its tip has been designed. The generator utilizes the optical and photo-acoustic properties of gold nanoparticles. When heated by laser pulses, a thin absorption layer made up of these nanoparticles at the cleaved surface of a single mode fiber generates a mechanical shock wave caused by thermal expansion. Mie's theory was applied in a MATLAB simulation to determine the relationship between the absorption efficiency and the optical resonance wavelengths of a layer of gold nanospheres. Results showed that the absorption efficiency and related resonance wavelengths of gold nanospheres varied based on the size of the gold nanosphere particles. In order to obtain the bandwidths associated with ultrasound, another MATLAB simulation was run to study the relationship between the power of the laser being used, the size of the gold nanosphere, and the energy decay time. The results of this and the previous simulation showed that the energy decay time is picoseconds in length.

Paper Details

Date Published: 20 April 2010
PDF: 7 pages
Proc. SPIE 7677, Fiber Optic Sensors and Applications VII, 76770X (20 April 2010); doi: 10.1117/12.852210
Show Author Affiliations
Nan Wu, Univ. of Massachusetts Lowell (United States)
Wenhui Wang, Univ. of Massachusetts Lowell (United States)
Ye Tian, Univ. of Massachusetts Lowell (United States)
Charles Guthy, Univ. of Massachusetts Lowell (United States)
Xingwei Wang, Univ. of Massachusetts Lowell (United States)


Published in SPIE Proceedings Vol. 7677:
Fiber Optic Sensors and Applications VII
Alexis Mendez; Henry H. Du; Anbo Wang; Eric Udd; Stephen J. Mihailov, Editor(s)

© SPIE. Terms of Use
Back to Top