Abstract
We demonstrate a high-peak-power femtosecond fiber laser system based on single-mode holmium (Ho)-doped fibers. 833fs, 27.7MHz pulses at 2083.4nm generated in a passively mode-locked Ho fiber laser are amplified and compressed to near transform-limited 172fs, 7.2nJ pulses with 24.3kW peak power. We achieve this performance level by using the soliton effect and high-order soliton compression. To the best of our knowledge, this is the first demonstration of sub-200fs pulses, with peak power exceeding 10kW from a Ho-doped single-mode fiber laser system without using bulk optics compressors.
Highlights
The optimal operation spectral range is typically restricted to 1.9–2.0 μm [7,8,9], which coincides with unwanted water and atmospheric molecular absorption lines [4]
By using dispersion-managed techniques, 160 fs pulses can be generated in a Ho fiber oscillator [23]
Due to the soliton effect and high-order soliton compression, our system is able to generate near-transform-limited 172 fs pulses with 24.3 kW peak power, representing, to the best of our knowledge, the highest peak power ever achieved from a single-mode Ho-doped fiber laser system without the use of bulk optics compressors
Summary
OCIS codes: (060.2320) Fiber optics amplifiers and oscillators; (320.7090) Ultrafast lasers; (060.4370) Nonlinear optics, fibers; (060.5530) Pulse propagation and temporal solitons. Pulse energy as high as 2.55 nJ has been directly achieved from an all-fiber graphene-mode-locked Ho-doped fiber laser [22].
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