Temperature distribution and modification mechanism inside glass with heat accumulation during 250 kHz irradiation of femtosecond laser pulses

Journal Article · Mon Dec 08 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3046101· OSTI ID:21175798

Sakakura, Masaaki; Shimotsuma, Yasuhiko ^[1]; Shimizu, Masahiro; Miura, Kiyotaka; Hirao, Kazuyuki ^[2]

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1. Innovative Collaboration Center of Kyoto University, Kyoto 615-8520 (Japan)
2. Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan)

Heat accumulation by high repetition rate femtosecond laser irradiation inside glass generates a much larger modification than that by a single pulse. In this study, we determined the temperature distribution due to heat accumulation and the characteristic temperature for heat modification inside a soda lime glass by analyzing the relationship between the radius of modification and glass temperature. The validity of the analysis was confirmed by reproducing the modification due to two-beam irradiation. The determined characteristic temperature suggested that the temperature distribution and the spatial dependence of the stress relaxation are important in the mechanism of heat modification.

• OSTI ID: 21175798
• Journal Information: Applied Physics Letters, Vol. 93, Issue 23; Other Information: DOI: 10.1063/1.3046101; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALCIUM COMPOUNDS
GLASS
HEAT
IRRADIATION
LASER RADIATION
LASERS
MODIFICATIONS
PULSES
SILICON COMPOUNDS
SODIUM CARBONATES
SPACE DEPENDENCE
STRESS RELAXATION
TEMPERATURE DISTRIBUTION