Characterization of optical microring ultrasound detector by using a high frequency focused photoacoustic transmitter

Hyoung Won Baac; Tao Ling; Sheng Wen Huang; Shai Ashkenazi; L. Jay Guo

doi:10.1063/1.3243337

Characterization of optical microring ultrasound detector by using a high frequency focused photoacoustic transmitter

Hyoung Won Baac, Tao Ling, Sheng Wen Huang, Shai Ashkenazi, L. Jay Guo

Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

We characterize a response of optical microring resonator to high frequency focused ultrasound. To properly evaluate the response over high frequency and broadband spectrum, we use a photoacoustic concave transmitter generating and subsequently focusing the ultrasound. A detected focused profile reveals two types of spatial peaks due to the special ring-shaped detector geometry interacting with the high frequency focused ultrasound. Spectral analysis shows that those peaks are contributed by the main and the side lobes of focused ultrasound, respectively. Experimental focal widths agree with theoretical values within ±2 μm error, which can be attributed to the narrow width of waveguide.

Original language	English (US)
Article number	144105
Journal	Applied Physics Letters
Volume	95
Issue number	14
DOIs	https://doi.org/10.1063/1.3243337
State	Published - 2009

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Funding Information:
This work is supported by NIH Grant No. EB007619.

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title = "Characterization of optical microring ultrasound detector by using a high frequency focused photoacoustic transmitter",

abstract = "We characterize a response of optical microring resonator to high frequency focused ultrasound. To properly evaluate the response over high frequency and broadband spectrum, we use a photoacoustic concave transmitter generating and subsequently focusing the ultrasound. A detected focused profile reveals two types of spatial peaks due to the special ring-shaped detector geometry interacting with the high frequency focused ultrasound. Spectral analysis shows that those peaks are contributed by the main and the side lobes of focused ultrasound, respectively. Experimental focal widths agree with theoretical values within ±2 μm error, which can be attributed to the narrow width of waveguide.",

author = "{Won Baac}, Hyoung and Tao Ling and Huang, {Sheng Wen} and Shai Ashkenazi and Guo, {L. Jay}",

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language = "English (US)",

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AU - Won Baac, Hyoung

AU - Ling, Tao

AU - Huang, Sheng Wen

AU - Ashkenazi, Shai

AU - Guo, L. Jay

N1 - Funding Information: This work is supported by NIH Grant No. EB007619.

PY - 2009

Y1 - 2009

N2 - We characterize a response of optical microring resonator to high frequency focused ultrasound. To properly evaluate the response over high frequency and broadband spectrum, we use a photoacoustic concave transmitter generating and subsequently focusing the ultrasound. A detected focused profile reveals two types of spatial peaks due to the special ring-shaped detector geometry interacting with the high frequency focused ultrasound. Spectral analysis shows that those peaks are contributed by the main and the side lobes of focused ultrasound, respectively. Experimental focal widths agree with theoretical values within ±2 μm error, which can be attributed to the narrow width of waveguide.

AB - We characterize a response of optical microring resonator to high frequency focused ultrasound. To properly evaluate the response over high frequency and broadband spectrum, we use a photoacoustic concave transmitter generating and subsequently focusing the ultrasound. A detected focused profile reveals two types of spatial peaks due to the special ring-shaped detector geometry interacting with the high frequency focused ultrasound. Spectral analysis shows that those peaks are contributed by the main and the side lobes of focused ultrasound, respectively. Experimental focal widths agree with theoretical values within ±2 μm error, which can be attributed to the narrow width of waveguide.

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Characterization of optical microring ultrasound detector by using a high frequency focused photoacoustic transmitter

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