Intense ultraviolet-visible-infrared full-spectrum laser

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

来源：Light-Science & Applications, 2023, 12(1): 199.

DOI：10.1038/s41377-023-01256-6

• HOLLOW-CORE FIBER
• SUPERCONTINUUM GENERATION
• 2ND-HARMONIC GENERATION
• HARMONIC-GENERATION
• COMPRESSION

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 mu m, 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.

• 单位
  中国科学院