Shock wave and cavitation bubble measurements of ultrashort-pulse laser-induced breakdown in water

Daniel X. Hammer; Robert J. Thomas; Martin Frenz; E. Duco Jansen; Gary D. Noojin; Sarah J. Diggs; Joachim Noack; Alfred Vogel; Benjamin A. Rockwell

doi:10.1117/12.239605

7 May 1996 Shock wave and cavitation bubble measurements of ultrashort-pulse laser-induced breakdown in water

Daniel X. Hammer, Robert J. Thomas, Martin Frenz, E. Duco Jansen, Gary D. Noojin, Sarah J. Diggs, Joachim Noack, Alfred Vogel, Benjamin A. Rockwell

Author Affiliations +

Proceedings Volume 2681, Laser-Tissue Interaction VII; (1996) https://doi.org/10.1117/12.239605
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Laser-induced breakdown (LIB) has long been used in ophthalmic microsurgery as a mechanism for disruption of tissue. The goal of this surgery has been precise tissue cutting by plasma formation and a minimization of collateral damage due to shock wave and cavitation bubble formation. We investigate the strength of the shock wave emission, the size of the cavitation bubble, and the amount of plasma shielding to determine the efficacy of using femtosecond pulses in surgery to reduce collateral photoacoustic damage. A pump-probe technique is used to image the time-resolved evolution of the cavitation bubble produced by focused laser pulses with pulsewidths of 130 fs, 300 fs, 3 ps, and 60 ps. Simultaneously, a hydrophone is used to measure the pressure response generated by the initial plasma shock wave and subsequent shock waves generated by the collapse and rebound of the cavitation bubbles. In addition, transmission measurements are made which indicate the amount of energy shielded beyond the focus by the plasma. These measurements give a good indication of the degree to which collateral damage may be reduced as the pulsewidths is decreased from the picosecond to the femtosecond time regime.

Citation Download Citation

Daniel X. Hammer, Robert J. Thomas, Martin Frenz, E. Duco Jansen, Gary D. Noojin, Sarah J. Diggs, Joachim Noack, Alfred Vogel, and Benjamin A. Rockwell "Shock wave and cavitation bubble measurements of ultrashort-pulse laser-induced breakdown in water", Proc. SPIE 2681, Laser-Tissue Interaction VII, (7 May 1996); https://doi.org/10.1117/12.239605

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