Writing waveguides in fused silica using a femtosecond laser

Ma, Lin; Shi, Shunxiang; Cheng, Guanghua; Yu, Lei; Liu, Qing; Chen, Guofu; Zhao, Wei

doi:10.1117/12.522144

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2005

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“…This effect can be used to write three-dimensional objects with sub-micrometer precision. Such as diffractive optical elements, photonic bandgap material, gratings, and three-dimensional data storage [1][2][3][4][5] . This effect is not limited to use optical transparent materials, and also can be applied to semiconductors, ceramic and biological tissues [6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Multiple micro-explosions driven by a single focused femtosecond pulse in transparent material

Shi

Cheng

et al. 2005

SPIE Proceedings

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Darkening and micro-explosions inside ZBaF15 optical glass are investigated by using focused femtosecond laser pulse.With loose focusing, multiple micro-explosions occur in fused silica and ZBaF15 optical glass with single femtosecond pulse. The micro-explosions driven in the center of darkening region are observed in ZBaF15 optical glass. A numerical simulation is given by a model based on the beam propagation in wave-guide channeling induced by the front of excitation pulse. The mechanism of refractive index modification, which induced by femtosecond pulse, is discussed.

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