Continuous-wave photoacoustic microscopy

Konstantin Maslov; Lihong V. Wang

doi:10.1117/12.702240

13 February 2007 Continuous-wave photoacoustic microscopy

Konstantin Maslov, Lihong V. Wang

Proceedings Volume 6437, Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics; 64370P (2007) https://doi.org/10.1117/12.702240
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

We have built a photoacoustic microscope (PAM) using an amplitude-modulated continuous-wave (CW) laser source, which is an inexpensive 120-mW laser diode. By using a bowl-shaped piezoelectric transducer, whose numerical aperture is 0.85 and resonance frequency is 2.45 MHz, we have experimentally demonstrated a lateral resolution of 600 &mgr;m, an axial resolution of 700 &mgr;m, and a signal-to-noise ratio (SNR) as high as 43 dB. Although the SNR in the CW PAM system is an order of magnitude worse than that of the pulsed-laser-based PAM system, CW PAM shows potential for biomedical applications as it uses durable and inexpensive semiconductor lasers, which will significantly reduce operation costs of the PAM systems.

Citation Download Citation

Konstantin Maslov and Lihong V. Wang "Continuous-wave photoacoustic microscopy", Proc. SPIE 6437, Photons Plus Ultrasound: Imaging and Sensing 2007: The Eighth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 64370P (13 February 2007); https://doi.org/10.1117/12.702240

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available