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Polarization Maintaining Large Mode Area Yb Fibers for All Fiber Nanosecond Pulse Amplification
Erin S. Lamb, Yaakov Glick, Jose Pincha, Ishu Goel, Robert S. Windeler, Simona Ovtar, Vasiliy Lukonin, Ian Sun, Shantanu Pandit, Jeffrey W. Nicholson
https://arxiv.org/abs/2510.03213

Polarization Maintaining Large Mode Area Yb Fibers for All Fiber Nanosecond Pulse Amplification
Polarization maintaining (PM), all-fiber amplifiers offer the benefits of alignment free and environmentally stable operation. To achieve high output powers, particularly in pulsed operation, it is necessary to balance the need to reduce deleterious nonlinear effects, often through the use of large mode area (LMA) fibers, with the onset of transverse mode instability whereby higher order modes (HOMs) mix with the desired fundamental mode output. Over the last few years, advances in high HOM los…