Ultra-compact micro-optical elements for generating high-order Bessel beams

Abstract

Compared with traditional vortex beams, high-order Bessel beams (HoBBs) have the unique characteristics of non-diffraction and self-healing, which makes them more competitive in fields of complex-environment optical manipulation and long-distance optical communication. With the progress of machining technology, the realization of micro-nano-sized optical components becomes possible, and integrated optics becomes the trend of future development. However, up to now, the traditional devices for generating HoBBs have a large volume and high weight, which makes it difficult to achieve optical integration. Here, we have designed an ultra-compact micro-optical element to generate high-quality micro-sized HoBBs. Good morphology of the element prepared via laser direct writing (LDW), and beam characteristics of non-diffraction and self-healing were demonstrated experimentally.

KEYWORDS:

• High-order Bessel beams
• ultra-compact
• micro-optical elements
• laser direct writing

Acknowledgements

The authors would like to acknowledge the support by Strategic Priority Research Program of CAS (grant number XDC07030303), National Natural Science Foundation of China (NSFC) (61825502, 61590930, 61827826, 61805098).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Competing interests

The authors declare no competing interests.

Additional information

Funding

This work was supported by National Natural Science Foundation of China (NSFC): [Grant Number 61825502, 61590930, 61827826, 61805098]; Strategic Priority Research Program of CAS: [Grant Number XDC07030303].