title: Femtosecond laser-induced inverted microstructures inside glasses by tuning refractive index of objective's immersion liquid.
abstract: We report the formation of inverted microstructures inside glasses after femtosecond laser irradiation by tuning the refractive index contrast between the immersion liquid and the glass sample. By using water as well as 1-bromonaphthalene as immersion liquids, microstructures with similar shape but opposite directions are induced after femtosecond laser irradiation. Interestingly, the elemental distribution in the induced structures is also inverted. The simulation of laser intensity distribution along the laser propagation direction indicates that the interfacial spherical aberration effect is responsible for the inversion of microstructures and elemental distribution.
authors.affiliation: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Luo
authors.forename: Juan
authors.initials: J
authors.lastname: Song
authors.forename: Xiao
authors.initials: X
authors.lastname: Hu
authors.forename: Haiyi
authors.initials: H
authors.lastname: Sun
authors.forename: Geng
authors.initials: G
authors.lastname: Lin
authors.forename: Huaihai
authors.initials: H
authors.lastname: Pan
authors.forename: Ya
authors.initials: Y
authors.lastname: Cheng
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
authors.forename: Quanzhong
authors.initials: Q
authors.lastname: Zhao
authors.forename: Zhizhan
authors.initials: Z
authors.lastname: Xu