Hongyu Luo, Xiangling Tian, Ying Gao, Rongfei Wei, Jianfeng Li, Jianrong Qiu, Yong Liu, "Antimonene: a long-term stable two-dimensional saturable absorption material under ambient conditions for the mid-infrared spectral region," Photonics Res. 6, 900 (2018)

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- Photonics Research
- Vol. 6, Issue 9, 900 (2018)

Fig. 1. Images of (a) multi-layer antimonene dispersion and (b) multi-layer antimonene droplets on quartz substrate, CaF 2 substrate, and Au mirror (from left to right).

Fig. 2. Material characterizations of the multi-layer antimonene sample: (a) low- and (b) high-magnification TEM images; (c) AFM image and (d) the corresponding height profile; (e) Raman and (f) XPS spectra.

Fig. 3. (a) Experimental setup of nonlinear absorption measurement at 2868.0 nm. (b) Transmittance of the multi-layer antimonene sample as a function of pulse peak intensity.

Fig. 4. Experiment setup of passively Q -switched Ho 3 + / Pr 3 + -codoped fluoride fiber laser using multi-layer antimonene as the SA.

Fig. 5. Q -switched trains and single pulse waveforms (insets) at the launched pump power of (a) 93.3 mW, (b) 358.6 mW, and (c) 489.0 mW. (d) Q -switched optical and RF (inset) spectra at the launched pump power of 489.0 mW.

Fig. 6. (a) Pulse duration and repetition rate and (b) output power and pulse energy as functions of the launched pump power.

Fig. 7. Evolution of Q -switched output power within 10 h at the launched pump power of ∼ 480 mW .

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