Abstract

High-power femtosecond laser systems are often limited to kilohertz repetition rates and even today, they mostly rely on Ti:sapphire as a gain medium. The development of Yb³⁺:fiber amplifiers combines the outstanding flexibility and robustness of fiber-based solutions with operation at high repetition rate and short pulse duration [1]. All these ingredients are crucial for advanced precision experiments exploiting extreme nonlinearities and/or sub-cycle optics with optimum noise performance and long-term stability.

© 2015 IEEE