Picosecond ultrasound spectroscopy with a stable fiber laser for ultrahigh-frequency-oscillator applications : From nanomechanics to biosensors

Ogi, Hirotsugu; Kawamoto, Tetsuya; Nakamichi, Yohei et al.

Japanese Journal of Applied Physics, 2012, 51, 07GA08

Number of Access:233（2025-10-09 11:48 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84166

Link to primary information 

File Format Terms of use Size Views Date.Available Description information
161344_1 pdf None 391 KB 196 2021.09.14  

Item Information

Output File Export EndNote Basic Export Mendeley

Title
Picosecond ultrasound spectroscopy with a stable fiber laser for ultrahigh-frequency-oscillator applications : From nanomechanics to biosensors
Creator
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
CreatorName
Ogi, Hirotsugu
CreatorName
Kawamoto, Tetsuya
CreatorName
Nakamichi, Yohei
NRID
1000080112027 1000080112027
CreatorName
Hirao, Masahiko
Description
Hirotsugu Ogi, Tetsuya Kawamoto, Yohei Nakamichi and Masahiko Hirao. Picosecond ultrasound spectroscopy with a stable fiber laser for ultrahigh-frequency-oscillator applications: From nanomechanics to biosensors. Japanese Journal of Applied Physics, 2012, 51(7S), 07GA08. https://doi.org/10.1143/JJAP.51.07GA08.
Abstract
We developed a stable picosecond-ultrasound-spectroscopy system with a fiber-laser light source. A linearly polarized light pulse with 532nm wavelength is split into pump and probe light pulses using a polarized beam splitter (PBS). The ultrahigh-frequency acoustic waves excited by the pump light pulse are successfully detected using the delayed probe light pulse with a signal-to-noise ratio higher than that of the traditional titanium-sapphire pulse laser. The wavelength used allows deep inspection of silicon because of less light absorption. The developed system is also applied to a biosensor with an ultrathin Pt film resonator, which shows significantly improved stability at 100 GHz. The amount of frequency change caused by the adsorption of target molecules is of the order of 10⁻², which is much higher than that detected with conventional oscillator biosensors by a factor of 10⁴.
Publisher
The Japan Society of Applied Physics
Source Title
Japanese Journal of Applied Physics
Volume (Issue)
51
Page
07GA08
Date of Issued
2012-07-20
Language
English
Handle URL
https://hdl.handle.net/11094/84166
PISSN
00214922
eISSN
13474065
NCID
AA12295836
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1143/JJAP.51.07GA08
Access Rights
open access
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article