Harmonic mode-locked fiber laser based on microfiber-assisted nonlinear multimode interference
نویسندگان
چکیده
A novel harmonic mode-locked fiber laser based on nonlinear multimode interference (NL-MMI) in a microfiber-assisted ultrafast optical switch is proposed this Letter. The can be obtained by tapering the splicing point of graded-index (GIMF) and single-mode fiber, which not only helps to shorten self-imaging period GIMF relax strict requirement NL-MMI length but also improves order. In experiment, with waist diameter ∼15 µm, repetition rates stably locked at 285 MHz, corresponding 16th-order mode-locking, pulse duration 1.52 ps. Our results provide insight into design high-repetition-rate application microfibers mode-locking device.
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ژورنال
عنوان ژورنال: Chinese Optics Letters
سال: 2022
ISSN: ['1671-7694']
DOI: https://doi.org/10.3788/col202220.010601