Light: Science & Applications (Aug 2023)

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
https://doi.org/10.1038/s41377-023-01256-6
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

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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.