Graphene Actively Mode‐Locked Lasers |
| |
| Authors: | Jakub Bogusławski Yadong Wang Hui Xue Xiaoxia Yang Dong Mao Xuetao Gan Zhaoyu Ren Jianlin Zhao Qing Dai Grzegorz Soboń Jarosław Sotor Zhipei Sun |
| |
| Affiliation: | 1. Laser & Fiber Electronics Group, Faculty of Electronics, Wroc?aw University of Science and Technology, Wroc?aw, Poland;2. Department of Electronics and Nanoengineering, Aalto University, Espoo, Finland;3. Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland;4. MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an, P. R. China;5. Division of Nanophotonics, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, P. R. China;6. State Key Lab Incubation Base of Photoelectric Technology and Functional Materials, and Institute of Photonics and Photon‐Technology, Northwest University, Xi'an, P. R. China;7. QTF Centre of Excellence, Department of Applied Physics, Aalto University, Aalto, Finland |
| |
| Abstract: | Actively mode‐locked lasers offer varying degrees of flexibility for a wider range of applications than their passively modulated counterparts, due to their capability for electrically controlled ultrahigh repetition rate operation. Graphene based electrooptic modulators with unique advantages of broad operation bandwidth and ultrafast speed are suitable for light modulation in various optoelectronic applications. Here, an actively mode‐locked laser with a graphene based electrooptic modulator is reported for the first time. The active mode‐locking technique combined together with the intracavity nonlinear pulse shortening effect allows the generation of transform‐limited 1.44 ps pulses with pulse energy of 844 pJ. The electrically controlled repetition rate of generated pulses, a key performance advantage of active mode‐locking, is also demonstrated. These results provide a practical and effective approach for actively mode‐locked lasers with broad operation bandwidth and compact footprint, which contributes a new way for applications of two‐dimensional (2D) layered materials in ultrafast lasers. |
| |
| Keywords: | electrooptic materials graphene mode‐locked lasers photonics |
|
|
