Journal
LASER PHYSICS LETTERS
Volume 19, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1612-202X/ac67d4
Keywords
mode-locked; harmonic; 2H-MoTe2
Categories
Funding
- National Natural Science Foundation of China [61975003]
- National Key Research and Development Program of China [2017YFB0405200]
- Natural Science Foundation of Beijing Municipality [4192015]
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We demonstrated a harmonic mode-locked erbium-doped fiber laser using a saturable absorber of 2H-MoTe2, a member of transition metal dichalcogenides. The experimental results validate the feasibility of 2H-MoTe2 as a promising saturable absorber for generating ultrashort pulses with high repetition rates.
We demonstrated a harmonic mode-locked Erbium-doped fiber laser based on a saturable absorber (SA) of 2H-MoTe2, which is a member of the transition metal dichalcogenides. The SA mode-locker was made by integrating the 2H-MoTe2 into a D-shaped fiber, and then was inserted into an erbium-doped fiber laser for mode-locking. The nonlinear modulation depth and saturation power of 2H-MoTe2-based SA were 10.9% and 19 MW cm(-2), respectively. The fundamentally mode-locked pulse train had a pulse width of 577 fs and a repetition rate of 14.32 MHz. The highest order of harmonic mode locking was 55th, which had the repetition rate of 787.6 MHz, pulse width of 820 fs and average output power of 11.8 mW. To the best of our knowledge, this is the highest operating repetition frequency that has ever been demonstrated in a 2H-MoTe2-based fiber laser. The experimental results validate the feasibility of 2H-MoTe2 as a promising SA for generating ultrashort pulses with high repetition rates.
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