The threshold of vapor channel formation in water induced by pulsed CO2 laser

Wenqing Guo; Xianzeng Zhang; Zhenlin Zhan; Shusen Xie

doi:10.1117/12.1000156

11 December 2012 The threshold of vapor channel formation in water induced by pulsed CO₂ laser

Wenqing Guo, Xianzeng Zhang, Zhenlin Zhan, Shusen Xie

Proceedings Volume 8553, Optics in Health Care and Biomedical Optics V; 85531Y (2012) https://doi.org/10.1117/12.1000156
Event: Photonics Asia, 2012, Beijing, China

Abstract

Water plays an important role in laser ablation. There are two main interpretations of laser-water interaction: hydrokinetic effect and vapor phenomenon. The two explanations are reasonable in some way, but they can’t explain the mechanism of laser-water interaction completely. In this study, the dynamic process of vapor channel formation induced by pulsed CO₂ laser in static water layer was monitored by high-speed camera. The wavelength of pulsed CO₂ laser is 10.64 um, and pulse repetition rate is 60 Hz. The laser power ranged from 1 to 7 W with a step of 0.5 W. The frame rate of high-speed camera used in the experiment was 80025 fps. Based on high-speed camera pictures, the dynamic process of vapor channel formation was examined, and the threshold of vapor channel formation, pulsation period, the volume, the maximum depth and corresponding width of vapor channel were determined. The results showed that the threshold of vapor channel formation was about 2.5 W. Moreover, pulsation period, the maximum depth and corresponding width of vapor channel increased with the increasing of the laser power.

Citation Download Citation

Wenqing Guo, Xianzeng Zhang, Zhenlin Zhan, and Shusen Xie "The threshold of vapor channel formation in water induced by pulsed CO₂ laser", Proc. SPIE 8553, Optics in Health Care and Biomedical Optics V, 85531Y (11 December 2012); https://doi.org/10.1117/12.1000156

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