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15 February 2012 Photonic crystal fiber with large-mode area and low-bending loss for high-power compact lasers and amplifiers
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Abstract
We report on a flexible large mode area (LMA) photonic crystal fiber (PCF) for high power laser and amplifier applications. We designed a fiber cross-section that includes two regions with different air-filling factors on opposite sides of the fiber core. This design allows suppressing higher order modes (HOMs) when the fiber is bent around a 10 cm radius at a wavelength of 1064 nm. The fiber then exhibits single-mode (SM) operation within a very large core with a diameter larger than 60 μm. The loss of the fundamental mode (FM) is lower than 0.01 dB/m. We can therefore consider building compact high power fiber lasers and amplifiers with a nearly diffraction limited beam output using our LMA PCF.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marek Napierała, Elżbieta Bereś-Pawlik, Tomasz Nasilowski, Paweł Mergo, Francis Berghmans, and Hugo Thienpont "Photonic crystal fiber with large-mode area and low-bending loss for high-power compact lasers and amplifiers", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82370Y (15 February 2012); https://doi.org/10.1117/12.908025
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