Journal
NANOPHOTONICS
Volume 9, Issue 8, Pages 2549-2555Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2020-0113
Keywords
two-dimensional nanomaterials; saturable absorbers; mode-locked laser; fiber lasers
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Funding
- National Natural Science Foundation of China (NSFC) [11674036, 11875008, 11975012]
- Beijing Youth Top Notch Talent Support Program [2017000026833ZK08]
- Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications) [IPOC2019ZZ01]
- Fundamental Research Funds for the Central Universities [500419305]
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University [2019GZKF03007]
- Beijing University of Posts and Telecommunications Excellent Ph.D. Students Foundation [CX2019202]
- Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology [SKL2018KF04]
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IV-VI semiconductors have attracted widespread attention in basic research and practical applications, because of their electrical and optoelectronic properties comparable to graphene. I lerein, an optical modulator based on SnSSe with strong nonlinearity is prepared by chemical vapor transfer method. The modulation depth of proposed SnSSe saturable absorber (SA) is up to 57.5%. By incorporating SnSSe SA into the laser, the Q-switched pulses as short as 547.8 ns are achieved at 1530.07 nm. As far as we know, this is the first successful application of SnSSe in Q-switched lasers. Our investigation not only prove the optical nonlinearity of SnSSe, but also reveal the potential of SnSSe SA in ultrafast photonics.
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