Laser & Optoelectronics Progress, Volume. 59, Issue 21, 2105001(2022)
Super-Diffraction Focusing Based on Bessel Beam Controlled by Composited Light Field
In the disciplines of focal field modulation, optical micro-machining, optical micromanipulation, and optical communication, the new optical field modulation technology has made significant achievements. In this study, we propose a composite light field modulation scheme based on the Bessel beam that realizes a distant super-diffraction limiting focus using the Bessel beam’s intrinsic angle spectrum and the annular aperture’s sharp edge diffraction. The theoretical and experimental results reveal that the bottle beam formed using the axicon-lens system has a focusing property and that the high-frequency components can be enhanced using the annular aperture’s sharp edge diffraction, resulting in super-diffraction properties bottle beam. The local focused light field is separated from the surrounding side lobe light field and is expected to be applied in far-field super-resolution microscopic imaging and optical tweezers.
Get Citation
Copy Citation Text
Xiaotong Zhu, Pengcheng Zheng, Xiangsheng Xie. Super-Diffraction Focusing Based on Bessel Beam Controlled by Composited Light Field[J]. Laser & Optoelectronics Progress, 2022, 59(21): 2105001
Category: Diffraction and Gratings
Received: Sep. 20, 2021
Accepted: Oct. 29, 2021
Published Online: Oct. 24, 2022
The Author Email: Xie Xiangsheng (xxs@stu.edu.cn)