A 33.2 W high beam quality chirped-pulse amplification-based femtosecond laser for industrial processing

Zhenao Bai, Zhenxu Bai, Xiaolong Sun, Yong Liang, Kun Wang, Duo Jin, Zhongwei Fan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
4 Downloads (Pure)

Abstract

A photonic crystal fiber-based chirped pulse amplification delivering 272 fs pulses of 66.4 µJ energy at a repetition rate of 500 kHz is presented, resulting in an average/peak power of 33.2W/244 MW. A single grating is adopted for the pulse width stretching and compression, which leads to high-compactness and low cost of the system. The output beam is near-diffraction-limited (M2 = 1.1 ± 0.05) with a power stability better than 0.5%. The cutting of alumina ceramic substrate and flexible printed circuit are demonstrated by using the laser system. The results indicate that the laser is competent for industrial applications.

Original languageEnglish
Article number2841
Pages (from-to)1-7
Number of pages7
JournalMaterials
Volume13
Issue number12
DOIs
Publication statusPublished - 2 Jun 2020

Bibliographical note

Copyright © 2020, MDPI AG. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Chirped pulse amplification
  • Femtosecond
  • Laser processing
  • Photonic crystal fiber

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