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We have demonstrated nondestructive 3D imaging of the femtosecond laser written 3D structures of both index change and optical breakdown within fused silica by using the optical coherence microscopy providing high lateral and depth resolution.
We have demonstrated femtosecond laser direct written volume diffractive optical elements in a fused silica. The fabrication of a built-in coupler consisting of a direct written waveguide and a Fresnel lens has been described.
A 1.2(height)times125(depth)times500(length) micro-slot was engraved along a fiber Bragg grating by chemically assisted femtosecond laser processing. By filling epoxy and UV-curing, waveguide with plastic-core and silica-cladding was created, presenting high thermal responding coefficient of 211pm/degC.
We present the first experimental observation of nonlinear beam diffusion and formation of diffraction-managed solitons in periodically-curved arrays of coupled optical waveguides created using femtosecond laser writing in silica glass, and titanium indiffusion in LiNbO3 crystals.
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