RT info:eu-repo/semantics/article T1 Widely power-tunable polarization-independent ultrafast mode-locked fiber laser using bulk InN as saturable absorber A1 Jiménez Rodríguez, Marco A1 Monteagudo Lerma, Laura A1 Monroy, Eva A1 González Herráez, Miguel A1 Naranjo Vega, Fernando Bernabé K1 Lasers K1 Fiber K1 Mode-locked lasers K1 Ultrafast lasers K1 Nonlinear optical materials K1 Ciencias tecnológicas K1 Electrónica K1 Technology K1 Electronics AB The growing demand of ultrafast mode-locked fiber lasers in the near infrared has boosted the research activity in this area. One of the most convenient ways to achieve passive mode locking consists of inserting a semiconductor saturable absorber in the laser cavity to modulate the losses. However, in such a configuration, the limited power range of operation is still an unsolved issue. Here we report the fabrication of an ultrafast, high-power, widely power-tunable and non-polarization-dependent mode-locked fiber laser operating at 1.55 μm, using an InN layer as saturable absorber. With post-amplification, this laser delivers 55-fs pulses with a repetition rate of 4.84 MHz and peak power in the range of 1 MW in an all-fiber arrangement. PB Optical Society of America SN 1094-4087 YR 2017 FD 2017-03-06 LK http://hdl.handle.net/10017/29259 UL http://hdl.handle.net/10017/29259 LA eng NO Ministerio de Economía y Competitividad DS MINDS@UW RD 18-abr-2024