Visualization of domain structure in periodically poled lithium niobate using radially polarized light

Yang Han; Hongfei Zhang; Fei Chen; Chen Yang; Yue Wang; Kebin Shi

doi:10.1117/1.APN.4.4.046012

Advanced Photonics Nexus, Volume. 4, Issue 4, 046012(2025)

Visualization of domain structure in periodically poled lithium niobate using radially polarized light

Yang Han^1,2, Hongfei Zhang^1,3、*, Fei Chen², Chen Yang^1,3, Yue Wang^1,4, and Kebin Shi^1,2,3,4、*

¹Peking University, School of Physics, Frontiers Science Center for Nano-Optoelectronics, State Key Laboratory of Mesoscopic Physics, Beijing, China

²Peking University Yangtze Delta Institute of Optoelectronics, Nantong, China

³Shanxi University, Collaborative Innovation Center of Extreme Optics, Taiyuan, China

⁴Peking University, National Biomedical Imaging Center, Beijing, China

show less

Figures & Tables(6)

Fig. 1. (a) $z$ -cut PPLN detection diagram, in which the arrows show the direction parallel to the optical axis of ${LiNbO}_{3}$ . (b) Polarization components after tight focusing of radially polarized light.

Download full size

View in Article

Fig. 2. (a) Field distribution of radially polarized light before focusing. (b) Intensity distribution of the longitudinal electric field at the focusing point. (c) Profiles of the squared amplitude of the longitudinal ( $| E_{z} |^{2}$ ) and transverse ( $| E_{r} |^{2}$ ) components and total intensity ( $| E |^{2}$ ) in the focal plane. The objective has an $NA = 0.95$ . The plots are normalized to the on-axis peak values.

Download full size

View in Article

Fig. 3. Schematic of the modular-built SHG microscope.

Download full size

View in Article

Fig. 4. (a) SH intensity with focal depth. (b) The PSF of the system under radially polarized light. (c) The PSF of the system under linearly polarized light.

Download full size

View in Article

Fig. 5. (a) SH image generated by linearly polarized light. (b) SH image generated by radially polarized light. (c) The structure of ${LiNbO}_{3}$ thin film and the SH imaging principle of ${LiNbO}_{3}$ . (d) Cross-section of the second-harmonic intensity, with longitudinal cutting in panels (a) and (b).

Download full size

View in Article

Table 1. Contrast of SHG detection for imaging domain structure regions.
View table
View in Article
Table 1. Contrast of SHG detection for imaging domain structure regions.
Position/other works Imaging contrast (linearly polarized light) Imaging contrast (radially polarized light)
Electrode removed 0.22 0.39
Reitzig et al.¹⁹ 0.33 —
Spychala et al.³² 0.22 —

Tools

Get Citation

Copy Citation Text

Yang Han, Hongfei Zhang, Fei Chen, Chen Yang, Yue Wang, Kebin Shi, "Visualization of domain structure in periodically poled lithium niobate using radially polarized light," Adv. Photon. Nexus 4, 046012 (2025)

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites