Passively Q-switched cylindrical vector laser based on a black phosphorus saturable absorber

Zhiwen He; Yang Zheng; Hongyan Liu; Mingkun Li; Hua Lu; Heze Zhang; Qingliang Feng; Dong Mao

doi:10.3788/COL201917.020004

Journals >Chinese Optics Letters >Volume 17 >Issue 2 >Page 020004 > Article

Chinese Optics Letters
Vol. 17, Issue 2, 020004 (2019)

Passively Q-switched cylindrical vector laser based on a black phosphorus saturable absorber

Zhiwen He, Yang Zheng, Hongyan Liu, Mingkun Li, Hua Lu^*, Heze Zhang, Qingliang Feng, and Dong Mao^**

Author Affiliations

MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an 710072, China

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DOI: 10.3788/COL201917.020004 Cite this Article Set citation alerts

Zhiwen He, Yang Zheng, Hongyan Liu, Mingkun Li, Hua Lu, Heze Zhang, Qingliang Feng, Dong Mao. Passively Q-switched cylindrical vector laser based on a black phosphorus saturable absorber[J]. Chinese Optics Letters, 2019, 17(2): 020004 Copy Citation Text

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Fig. 1. (a) AFM image and (b) Raman spectra of BP nanosheets. (c) Side profile and (d) saturable absorption of BP-PVA film.

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(a) Reflection spectrum of the TMFBG. (b) Setup of BP Q-switched cylindrical vector laser. LD, laser diode; WDM, wavelength division multiplexer; EDF, erbium-doped fiber; OC, output coupler; SMFBG, single-mode fiber Bragg grating; MC, mode converter; SA, saturable absorber; TMFBG, two-mode fiber Bragg grating; PC, polarization controller; CCD, charge coupled device; SMF, single-mode fiber.

Fig. 2. (a) Reflection spectrum of the TMFBG. (b) Setup of BP Q-switched cylindrical vector laser. LD, laser diode; WDM, wavelength division multiplexer; EDF, erbium-doped fiber; OC, output coupler; SMFBG, single-mode fiber Bragg grating; MC, mode converter; SA, saturable absorber; TMFBG, two-mode fiber Bragg grating; PC, polarization controller; CCD, charge coupled device; SMF, single-mode fiber.

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Fig. 3. Spatial intensity distributions of Q-switched (a) RPB and (b) APB, and their corresponding evolution with the rotation of the linear polarizer. (c) Optical spectra and (d) pulse trains of typical Q-switched APB and RPB at the pump power of 79.85 mW.

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Fig. 4. (a) Repetition rate and pulse duration versus pump power. (b) Evolution of output power of RPB/APB from TMFBG and coupler with pump power (the linear fitting results are denoted by black lines).

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