Journal
PHOTONICS RESEARCH
Volume 8, Issue 7, Pages 1140-1147Publisher
OPTICAL SOC AMER
DOI: 10.1364/PRJ.391911
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Funding
- National Natural Science Foundation of China [51778030, 51978024, 61435010, 61875138, 61961136001]
- State Key Research Development Program of China [2019YFB2203503]
- Science, Technology and Innovation Commission of Shenzhen Municipality [GJHZ20180928160209731, JCYJ20170811093453105, JCYJ20180307164612205, KQTD2015032416270385]
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Q-switched fiber lasers are integral tools in science, industry, and medicine due to their advantages of flexibility, compactness, and reliability. All-optical strategies to generate ultrashort pulses have obtained considerable attention as they can modulate the intracavity Q factors without employing costly and complex electrically driven devices. Here, we propose a high-performance all-optical modulator for actively Q-switched pulse generation based on a microfiber knot resonator deposited with V2CTx MXene. Experimental results show that the obtained Q-switching pulses exhibit a wide adjustment range of repetition rate from 1 kHz to 20 kHz, a high signal-to-background contrast ratio of similar to 55 dB, and a narrow pulse width of 8.82 mu s, indicating great potentials of providing a simple and viable solution in photonic applications. (c) 2020 Chinese Laser Press
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