Abstract

In this paper, we show parallel femtosecond laser writing of optical waveguides, 2D arrayed birefringence filter and diffractive optical elements inside a silica glass. In addition, we investigated the stress dynamics after parallel fs laser irradiation inside a glass, because understanding of the dynamics is important for application of parallel laser writing. We found that a complicated stress distribution appears transiently inside a glass because of the interference of multiple laser induced stress waves.

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