Intense ultraviolet-visible-infrared full-spectrum laser

Lihong Hong; Liqiang Liu; Yuanyuan Liu; Junyu Qian; Renyu Feng; Wenkai Li; Yanyan Li; Yujie Peng; Yuxin Leng; Ruxin Li; Zhi-Yuan Li

doi:10.1038/s41377-023-01256-6

Intense ultraviolet-visible-infrared full-spectrum laser

Light Sci Appl. 2023 Aug 22;12(1):199. doi: 10.1038/s41377-023-01256-6.

Authors

Lihong Hong¹, Liqiang Liu¹, Yuanyuan Liu¹, Junyu Qian², Renyu Feng², Wenkai Li², Yanyan Li², Yujie Peng², Yuxin Leng², Ruxin Li³, Zhi-Yuan Li⁴

Affiliations

¹ School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510641, China.
² State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanic Chinese Academy of Sciences, Shanghai, 201800, China.
³ State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanic Chinese Academy of Sciences, Shanghai, 201800, China. ruxinli@mail.shcnc.ac.cn.
⁴ School of Physics and Optoelectronics, South China University of Technology, Guangzhou, 510641, China. phzyli@scut.edu.cn.

Abstract

A high-brightness ultrabroadband supercontinuum white laser is desirable for various fields of modern science. Here, we present an intense ultraviolet-visible-infrared full-spectrum femtosecond laser source (with 300-5000 nm 25 dB bandwidth) with 0.54 mJ per pulse. The laser is obtained by sending a 3.9 μm, 3.3 mJ mid-infrared pump pulse into a cascaded architecture of gas-filled hollow-core fiber, a bare lithium niobate crystal plate, and a specially designed chirped periodically poled lithium niobate crystal, under the synergic action of second and third order nonlinearities such as high harmonic generation and self-phase modulation. This full-spectrum femtosecond laser source can provide a revolutionary tool for optical spectroscopy and find potential applications in physics, chemistry, biology, material science, industrial processing, and environment monitoring.