“中国牌”晶体上新 提升全固态真空紫外激光器功能

Core Viewpoint - Chinese scientists have successfully developed ammonium borofluoride (ABF) crystals, a new nonlinear optical crystal material that provides a key material system for compact and efficient all-solid-state vacuum ultraviolet (VUV) lasers, following the success of potassium borofluoride (KBBF) crystals [1][2]. Group 1: Research and Development - The research team from the Xinjiang Institute of Physics and Chemistry, Chinese Academy of Sciences, led by researcher Pan Shilie, has made significant advancements in the field of vacuum ultraviolet nonlinear optical crystal materials, overcoming challenges in large crystal growth and device processing technology [1][6]. - The team has achieved a direct frequency doubling of VUV laser output at a wavelength of 158.9 nanometers using birefringent phase matching technology, marking a significant milestone in the field [1][9]. Group 2: Scientific Contribution - The research paper detailing these findings was published in the international academic journal "Nature," highlighting the importance of nonlinear optical crystals in achieving all-solid-state VUV laser output, which is crucial for determining key performance indicators such as output wavelength and conversion efficiency [2][5]. - The development of ABF crystals represents a breakthrough in addressing the scientific challenge of creating a new type of crystal that combines high transparency in the VUV range, strong nonlinear response, high birefringence, and excellent growth performance [5][6]. Group 3: Future Directions - The research team plans to continue exploring stable growth techniques for ABF crystals, device processing methods, and applications of laser sources, aiming to achieve shorter wavelengths, higher energy, and greater power in all-solid-state VUV laser sources [9].