Abstract

Investigations are performed to explore high-repetition-rate femtosecond laser ablation effects on the physical and chemical properties of poly(methyl methacrylate) (PMMA). A scanning electron microscopy (SEM) is used to characterize the morphology change in the laser-ablated regions. The infrared and Raman spectroscopy reveals that the fundamental structure of the PMMA is altered after laser ablation. We demonstrate the cumulative heating is much greater during high-repetition-rate femtosecond laser ablation, supporting a photothermal depolymerization mechanism during the ablation process.

© 2015 Chinese Laser Press

Mechanisms of femtosecond laser-induced refractive index modification of poly(methyl methacrylate)

Alexandra Baum, Patricia J. Scully, Walter Perrie, Dun Liu, and Valerio Lucarini
J. Opt. Soc. Am. B 27(1) 107-111 (2010)

Photochemistry of refractive index structures in poly(methyl methacrylate) by femtosecond laser irradiation

Alexandra Baum, Patricia J. Scully, Maria Basanta, C. L. Paul Thomas, Peter R. Fielden, Nicholas J. Goddard, Walter Perrie, and Paul R. Chalker
Opt. Lett. 32(2) 190-192 (2007)

Symmetric waveguides in poly(methyl methacrylate) fabricated by femtosecond laser pulses

Seiji Sowa, Wataru Watanabe, Takayuki Tamaki, Junji Nishii, and Kazuyoshi Itoh
Opt. Express 14(1) 291-297 (2006)

Effects of high-repetition-rate femtosecond laser micromachining on the physical and chemical properties of polylactide (PLA)

Wei Jia, Yiming Luo, Jian Yu, Bowen Liu, Minglie Hu, Lu Chai, and Chingyue Wang
Opt. Express 23(21) 26932-26939 (2015)

Femtosecond laser fabrication of tubular waveguides in poly(methyl methacrylate)

Arnaud Zoubir, Cedric Lopez, Martin Richardson, and Kathleen Richardson
Opt. Lett. 29(16) 1840-1842 (2004)