Material micromachining using bursts of high repetition rate picosecond pulses from a fiber laser source

Pascal Deladurantaye; Alain Cournoyer; Mathieu Drolet; Louis Desbiens; Dany Lemieux; Martin Briand; Yves Taillon

doi:10.1117/12.875265

10 February 2011 Material micromachining using bursts of high repetition rate picosecond pulses from a fiber laser source

Pascal Deladurantaye, Alain Cournoyer, Mathieu Drolet, Louis Desbiens, Dany Lemieux, Martin Briand, Yves Taillon

Author Affiliations +

Proceedings Volume 7914, Fiber Lasers VIII: Technology, Systems, and Applications; 791404 (2011) https://doi.org/10.1117/12.875265
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

In this paper, we demonstrate the benefits of using bursts of picosecond pulses for material micromachining and compare the results with those obtained when using a nanosecond source with similar pulse energy, pulse width and pulse shape. The picosecond laser source used for the experiments was delivering 60-ps pulses at a repetition rate of 1.8 GHz, grouped within arbitrarily-shaped bursts having a width that could be varied from 2.5 to 40 ns. The laser output central wavelength was at 1064 nm and the output beam M² value was below 1.15. Micro-milling experiments were performed on silicon for two levels of energy per burst and with different burst amplitude profiles. We show that the maximum material removal efficiency and the surface quality can be increased by more than 25% when using bursts of picosecond pulses with respect to nanosecond pulses with similar energy per pulse. Effect of shaping the burst envelope of the picosecond laser on the maximum material removal efficiency is also presented.

Citation Download Citation

Pascal Deladurantaye, Alain Cournoyer, Mathieu Drolet, Louis Desbiens, Dany Lemieux, Martin Briand, and Yves Taillon "Material micromachining using bursts of high repetition rate picosecond pulses from a fiber laser source", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791404 (10 February 2011); https://doi.org/10.1117/12.875265

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