Generation of multiple stress waves in silica glass in high fluence femtosecond laser ablation

Journal Article · Mon Aug 09 00:00:00 EDT 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3479919· OSTI ID:21470906

Haofeng, Hu; Xiaolei, Wang; Hongchen, Zhai; Nan, Zhang; Pan, Wang ^[1]

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1. Institute of Modern Optics, Key Laboratory of Opto-electronic Information Science and Technology, Nankai University, Education Ministry of China, Tianjin 300071 (China)

Shadowgraphs of dynamic processes outside and inside transparent target during the intense femtosecond laser ablation of silica glass are recorded. Two material ejections outside the target and two corresponding stress waves inside the target are observed at different energy fluences. In particular, a third stress wave can be observed at energy fluence as high as 40 J/cm{sup 2}. The first wave is a thermoelastic wave, while the second and the third may be generated subsequently by the mechanical expansions. In addition, the magnitudes of the three stress waves decrease sequentially based on our analysis.

• OSTI ID: 21470906
• Journal Information: Applied Physics Letters, Vol. 97, Issue 6; Other Information: DOI: 10.1063/1.3479919; (c) 2010 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABLATION
GLASS
LASER RADIATION
OPACITY
PULSED IRRADIATION
SILICA
STRESSES
THERMOELASTICITY
VELOCITY
WAVE PROPAGATION
ELASTICITY
ELECTROMAGNETIC RADIATION
IRRADIATION
MECHANICAL PROPERTIES
MINERALS
OPTICAL PROPERTIES
OXIDE MINERALS
PHYSICAL PROPERTIES
RADIATIONS