Recently, Professor Li Zhiyuan's team of South China University of Technology has successfully manufactured a full-spectrum white-light laser, which has the characteristics of bright spot, smooth and flat spectrum, and large pulse energy. It can cover the UV-visible-infrared full spectrum of 300-5000 nm, and the single pulse energy reaches 0.54 mJ.
Recently, a related paper entitled Intense ultraviolet – visible – infrared full-spectrum laser was published in Light: Science & Applications, Hong Lihong, a doctoral student of South China University of Technology, is the first author, and Professor Li Zhiyuan of South China University of Technology and Academician Li Ruxin of Shanghai Institute of Optics and Fine Mechanics (Shanghai Institute of Optics and Fine Mechanics) of the Chinese Academy of Sciences are the co-correspondents.
It is reported that the advent of such a full-spectrum white-light laser can be used to construct full-spectrum ultrafast spectroscopy detection technology, which is expected to push laser technology to the world's leading level, so as to better serve the frontier research.
Based on this achievement, the research team will further build a full-spectrum ultrafast spectroscopy detection device, which is expected to carry out ultrafast precision detection of physical, chemical and life processes in multiple bands within the substance, so as to achieve the technical ability of high-speed spectroscopy, and then be used to carry out research in two-dimensional materials, lithium-ion batteries, chemical catalysis and other fields.
"Full-spectrum white-light laser is expected to be a milestone in the history of laser technology development, and can well answer Science magazine's 125 cutting-edge scientific questions in 2020, that is, whether human beings can create incoherent and powerful lasers similar to sunlight," said Li Zhiyuan.
The research group has realized the "three-high" white light femtosecond laser: large single pulse energy (the first high), spectral width of 300-5000 nm (the second high), and high spectral flatness (the third high), which basically covers the whole transmission range of lithium niobate crystals. Next, they will continue to work with Academician Li Ruxin's team to move towards a higher goal and strive to achieve the "three high" full-spectrum white light femtosecond laser in deep ultraviolet, ultraviolet, visible, near infrared, middle infrared and far infrared.
