Journal
OPTICS LETTERS
Volume 41, Issue 12, Pages 2739-2742Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.41.002739
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Funding
- Agence Nationale pour la Recherche [ANR-09-BLAN-0172-01]
- China Scholarship Council
- Universite Paris Sud
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0172] Funding Source: Agence Nationale de la Recherche (ANR)
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We demonstrate a new kind of form birefringence in lithium niobium silicate glass induced by femtosecond laser direct writing. By combining electron backscatter diffraction and transmission electron microscopy, we reveal a self-assembled nanostructure consisting of periodic phase change: nonlinear optical nanocrystals embedded in a network of walls in a vitreous phase. These walls are aligned perpendicular to the laser polarization direction. This self-organized nanostructure may successfully explain the origin of the laser-induced birefringence in this multicomponent glass quite differently from pure silica. These findings highlight a spectacular modification of glass, and enable construction of a high contrast three-dimensional refractive index and birefringent structures at the micrometer scale in multicomponent glasses. (C) 2016 Optical Society of America
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