Xiaofeng Guan, Jiawei Wang, Yuzhao Zhang, Bin Xu, Zhengqian Luo, Huiying Xu, Zhiping Cai, Xiaodong Xu, Jian Zhang, Jun Xu, "Self-Q-switched and wavelength-tunable tungsten disulfide-based passively Q-switched Er:Y2O3 ceramic lasers," Photonics Res. 6, 830 (2018)

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- Photonics Research
- Vol. 6, Issue 9, 830 (2018)

Fig. 1. Schematic of diode-pumped Er : Y 2 O 3 ceramic lasers. IM, input mirror; OC, output coupler.

Fig. 2. Dependence of average output power on absorbed power of self-Q -switched Er : Y 2 O 3 ceramic lasers; inset, corresponding laser spectrum at the highest output power.

Fig. 3. Typical self-Q -switched single-pulse profiles with corresponding pulse trains as insets.

Fig. 4. (a) XRD patterns and (b) Raman spectra of the bulk WS 2 and few-layer WS 2 samples; (c) AFM image and (d) height profile of an as-prepared few-layer WS 2 sample.

Fig. 5. Transmissions of the blank CaF 2 substrate and CaF 2 substrate with WS 2 thin film.

Fig. 6. Saturable absorption of the WS 2 saturable absorber used.

Fig. 7. Dependence of average output power on absorbed power of WS 2 -based Q -switched Er : Y 2 O 3 ceramic lasers; inset, corresponding laser spectrum at the highest output power.

Fig. 8. Typical single-pulse profile of a passively Q -switched Er : Y 2 O 3 ceramic laser; inset, corresponding pulse trains.

Fig. 9. (a) Stability measurement of average output power in 1 h and (b) temporal profiles of 12 superimposed pulses recorded every 5 min in 1 h.

Fig. 10. Dependences of (a) pulse width, (b) pulse repetition rate, (c) pulse energy, and (d) pulse peak power on absorbed powers.

Fig. 11. Wavelength tunings of the Er : Y 2 O 3 ceramic laser emissions around 2710, 2717, 2727, and 2740 nm.
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Table 1. Diode-Pumped Passively Q -Switched Mid-Infrared Solid-State Lasers Based on 2D Material Saturable Absorbers

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