Thick modulated planar film-foam target fabricated by femtosecond laser micromachining

wu yinzhong; huang yanhua; yin qiang; zhang lin; gu yuqiu

Volume 23 Issue 03

Mar. 2011

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Article Navigation > High Power Laser and Particle Beams > 2011 > 23(03): 0-

xia liansheng, chen debiao, zhang huang, et al. Research on compact solid-state high voltage pulse forming line[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

wu yinzhong, huang yanhua, yin qiang, et al. Thick modulated planar film-foam target fabricated by femtosecond laser micromachining[J]. High Power Laser and Particle Beams, 2011, 23.

xia liansheng, chen debiao, zhang huang, et al. Research on compact solid-state high voltage pulse forming line[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

wu yinzhong, huang yanhua, yin qiang, et al. Thick modulated planar film-foam target fabricated by femtosecond laser micromachining[J]. High Power Laser and Particle Beams, 2011, 23.

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Thick modulated planar film-foam target fabricated by femtosecond laser micromachining

1.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986-6,Mianyang 621900,China

Publish Date: 2011-03-15

Abstract

Abstract

Dual layer Polystyrene(PS)-poly-4-methyl-1-pentene(PMP) foam with thickness of 1.5 mm, used in Rayleigh-Taylor hydrodynamic instability experiments, was accurately cut employing femtosecond laser irradiation with 800 nm central wavelength, 120 fs duration, 1 kHz repetition rate focused by microscopic objective(5×, NA=0.14). During the cutting, the manner of uniform step descending of laser focus and processing parameters with average incident power of 30 mW, cutting speed of 300 μm/s were adopted. Compared with the case of nanosecond laser cutting, detrimental distortion and delamination of the dual heterogeneous layer around the femtosecond laser irradiated zone were effectively avoided. Uniform cutting edge and smooth facet were also obtained, with maximal cutting thickness exceeding
- femtosecond laser,
- micromachining,
- hydrodynamic instability,
- high thickness,
- cutting

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