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Obtaining More Energetic Modelocked Pulses From a SESAM Fiber Laser



Nathan R. Newbury, Laura Sinclair, Ian Coddington, Stefan Droste, Shaokang Wang, chaoran Tu, Seyed E. Jamali, Thomas Carruthers, Curtis Menyuk


Increasing the output power by increasing the pulse energy without increasing the noise level or decreasing the bandwidth is a major optimization goal for femtosecond fiber lasers that produce frequency combs. Here, we perform a computational study to optimize the cavity design of a femtosecond fiber laser that is passively modelocked with a semiconductor saturable absorbing mirror (SESAM). We use dynamical methods that are orders of magnitude faster computationally than standard evolutionary methods. We show that we can obtain higher pulse energies and hence higher output powers by simultaneously increasing the output coupling ratio, the gain, and the anomalous group delay dispersion. The output pulse has many times the energy of the pulse in the current experimental design with no penalty in the noise level or bandwidth.
Optics Express


frequency comb, fiber laser


Newbury, N. , Sinclair, L. , Coddington, I. , Droste, S. , Wang, S. , Tu, C. , Jamali, S. , Carruthers, T. and Menyuk, C. (2020), Obtaining More Energetic Modelocked Pulses From a SESAM Fiber Laser, Optics Express (Accessed April 19, 2024)
Created July 6, 2020, Updated March 17, 2023