Dual waveband generator of perfect vector beams

Hui Li; Haigang Liu; Xianfeng Chen

doi:doi:10.1364/PRJ.7.001340

Photonics Research, 2019, 7 (11): 11001340, Published Online: Nov. 1, 2019

Dual waveband generator of perfect vector beams Download： 654次

Hui Li ¹Haigang Liu ^1,2,*Xianfeng Chen ^1,3,*

Author Affiliations

¹ State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

² e-mail: liuhaigang@sjtu.edu.cn

³ e-mail: xfchen@sjtu.edu.cn

Figures & Tables

Fig. 1. Schematic of the experimental setup. GT prism, Glan–Taylor prism; HWP, half wave plate; QWP1, QWP2, and QWP3, quarter wave plates; PBS, polarized beam splitter; M1, M2, M3, and M4, mirrors; SPP, spiral phase plate; S1 and S2, 5% (mole fraction) MgO:LiNbO3; DM, dichroic mirror; L1 and L2, lens with focal length f=200 mm; SF1 and SF2, spatial filters; CCD1 and CCD2, charge coupled devices. Insets (a) and (b) represent the spatial intensity and polarization distributions of the simulated FF and SH PV beams, respectively.

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Fig. 2. (a) and (b) The simulated and experimental intensity distributions of the FF PV beams with TC l=1. (a1)–(a9) Simulated intensity profile of the FF PV beams when the GT prism has different polarization angles (0°, 20°, 40°, 60°, 80°, 100°, 120°, 140°, 160°) with respect to the positive horizontal direction. (b1)–(b9) are the corresponding experimental results.

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Fig. 3. (a) and (b) The simulated and experimental intensity distributions of the PV beams at the SH waveband. (a1)–(a9) Simulated intensity profiles of the generated PV beams when the GT prism has different polarization angles (0°, 20°, 40°, 60°, 80°, 100°, 120°, 140°, 160°) with respect to the positive horizontal direction. (b1)–(b9) are the corresponding experimental results.

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Fig. 4. First and third rows are, respectively, the experimental results of the FF PV beams with δ/2+2γ=π/3 and δ/2+2γ=2π/3. The second and fourth rows are, respectively, the SH PV beam patterns corresponding to the FF ones. Arrows in the figures show the polarization angles (0°, 45°, 90°, 135°) of the GT prism with respect to the positive horizontal direction.

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Fig. 5. Radii of the generated PV beams in the FF (left) and SH (right) wavebands with different TC.

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Hui Li, Haigang Liu, Xianfeng Chen. Dual waveband generator of perfect vector beams[J]. Photonics Research, 2019, 7(11): 11001340.

Dual waveband generator of perfect vector beams Download： 654次

Fig. 5. Radii of the generated PV beams in the FF (left) and SH (right) wavebands with different TC.

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Dual waveband generator of perfect vector beams Download： 654次

Fig. 5. Radii of the generated PV beams in the FF (left) and SH (right) wavebands with different TC.

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