| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Preparation of Bi$_{2}$Te$_{3}$ Based on Saturable Absorption System and Its Application in Fiber Lasers |
| Haoyu Wang, Yue-Jia Xiao, Qi Liu, Xiao-Wei Xing, Hu-Jiang Yang, and Wen-Jun Liu* |
| State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Cite this article: |
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Haoyu Wang, Yue-Jia Xiao, Qi Liu et al 2023 Chin. Phys. Lett. 40 114204 |
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Abstract Fiber laser is a fundamental component of laser systems and is of great significance for development of laser technology. Its pulse output can be divided into $Q$-switched and mode-locked. Achieving ultrashort pulse with narrower pulse duration and higher power is the focus of current research on mode-locked lasers. As an important component of fiber laser systems, saturable absorber (SA) can modulate losses in the optical cavity and generate pulses, enabling the laser system to achieve pulse output under long-term normal operating conditions better. Therefore, expanding the selection range of materials with better saturable absorption properties to improve the quality of pulse output is an important topic in current research. Here, the second generation topological insulator Bi$_{2}$Te$_{3}$ single crystal is prepared, and a ring fiber laser system is built with the Bi$_{2}$Te$_{3}$ SA. The mode-locked pulse with a pulse duration of 288 fs and a signal-to-noise ratio of 80.202 dB is realized. This result verifies that Bi$_{2}$Te$_{3}$, as a member of topological insulator, has good saturable absorption characteristics, and has broad prospects for the application research in lasers.
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Received: 18 October 2023
Published: 15 November 2023
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| PACS: |
42.55.Wd
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(Fiber lasers)
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42.65.Sf
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(Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics)
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42.70.Hj
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(Laser materials)
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42.70.-a
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(Optical materials)
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