Jinhe Yuan, Jiarui Li, Zhengyang Wu, Shuangcheng Li, Jie Han, Linjun Li. Passively Q-switched operation of a 1.94 µm thulium-doped solid-state laser based on MXene V2CTx[J]. Chinese Optics Letters, 2023, 21(2): 021402
- Chinese Optics Letters
- Vol. 21, Issue 2, 021402 (2023)
Fig. 1. (a) Electron image of V2CTx, (b) EDS of V2CTx, (c) linear absorption spectrum of V2CTx-SA, and (d) nonlinear absorption property of V2CTx-SA.
Fig. 2. Setup of the PQS Tm:YAP laser. V2CTx-SA, V2CTx saturable absorber; IC, input coupler; OC, output coupler; DM, dichroic mirror; f1 and f2, convex lenses.
Fig. 3. Relationship between output power and incident pump power: (a) PQS operation and (b) CW operation.
Fig. 4. Performances of V2CTxQ-switched laser: (a) pulse width and (b) repetition rate versus the incident pump power.
Fig. 5. Performances of V2CTxQ-switched laser: (a) pulse energy and (b) peak power versus the incident pump power.
Fig. 6. Typical temporal profiles and pulse trains. (a) and (b) are recorded at the peak power of 10.06 W, and (c) and (d) are recorded at the pulse energy of 6.33 µJ.
Fig. 7. CW spectra with a peak wavelength of 1992.1 and 1991.7 nm, and PQS spectra with a peak wavelength of 1937.8 and 1937.4 nm.
Fig. 8. (a) Measured M2 factor, and (b) and (c) are 2D and 3D spatial power distributions, respectively.
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