Journal
OPTICS AND LASER TECHNOLOGY
Volume 154, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2022.108269
Keywords
All-fiber lasers; Bidirectional mode-locked lasers
Categories
Funding
- National Key Research and Development Program of China [2021YFF0307804]
- Open Project of Advanced Laser Technology Laboratory of Anhui Province [AHL2021ZR02]
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In this study, an all-fiber bidirectional mode-locked laser based on nonlinear multimode interference is reported. It can generate asynchronous pulse trains in different directions and operate in different states. This work provides a new platform for studying the dynamic characteristics of bidirectional mode-locked lasers.
Bidirectional mode-locked lasers are an ideal light source for dual-comb technique for their system compactness and common noise cancellation. Here, we report an all-fiber bidirectional mode-locked laser based on nonlinear multimode interference. Asynchronous pulse trains in different directions with a repetition rate difference of 7 Hz are obtained. Besides, we record the pulse trains and spectra at different pump powers. In our experiment, the counter-propagating pulse (CPP) trains can operate in different states, such as the counterclockwise (CCW) direction works in single pulse while the clockwise (CW) direction works in multi-pulse or harmonic mode-locking. We believe that the work will provide a new platform for studying the dynamic characteristics of bidirectional mode-locked lasers.
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