Low-energy distortion-free femtosecond pulse laser inscription in coated, free-standing optical fiber
نویسندگان
چکیده
Low-energy, distortion-free femtosecond pulse laser inscription in coated freestanding fiber is demonstrated for the first time. Methodology features radial plane beamshaping to achieve optimal focusing and spot-like inscription within the fiber. Strong, firstorder fiber Bragg grating is achieved in coated single-mode fiber using only 50nJ pulse energy.
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