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Micro-holographic methods for sub-micrometer grating fabrication in fused silica with UV femtosecond laser
2008
Optical Design and Engineering III
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The optical layouts incorporating binary phase diffractive grating and a standard micro-objective were used for femtosecond microfabrication of periodical structures in fused silica. Two beams, generated in Talbot type interferometer, interfered on a surface and in the bulk of the sample. The method suggested allows better control over the transverse size of the grating pitch, and thus control the reflection strength of the waveguide or fibre grating. We present the examples of direct
doi:10.1117/12.797681
fatcat:kng7o6vuijgcrft6j7vgzfyxhi