Core Viewpoint - The research team at Xinjiang Institute of Physics and Chemistry has successfully developed ammonium borofluoride (ABF) crystals, achieving a world record for the shortest output wavelength of 158.9 nanometers in direct frequency-doubling vacuum ultraviolet laser technology, marking a significant advancement in the field of nonlinear optical crystals [2][3][4] Group 1: Technological Breakthrough - The ABF crystal represents a new material system for compact and efficient solid-state vacuum ultraviolet lasers, overcoming previous limitations associated with potassium borate fluoride (KBBF) crystals, which were the only practical crystals for achieving laser outputs below 200 nanometers [2][3] - The team introduced a "fluorination" design concept, incorporating the highly electronegative fluorine element into the borate crystal structure, which facilitated the development of high-quality ABF single crystals [3][4] Group 2: Performance and Applications - The ABF crystal has set three world records in direct frequency-doubling vacuum ultraviolet laser output, including the shortest output wavelength, the highest nanosecond pulse energy at 177 nanometers, and significantly improved optical conversion efficiency [4] - The unique advantages of the ABF crystal position it as a core material for high-performance solid-state vacuum ultraviolet lasers, with potential applications in high-end scientific equipment, ultra-precision laser processing, and innovative fields such as space communication [4] Group 3: Future Research Directions - The Xinjiang Institute of Physics and Chemistry plans to continue research on the stable growth technology of ABF crystals, device processing techniques, and the development of laser sources, aiming for even shorter wavelengths, higher energy outputs, and greater power in solid-state vacuum ultraviolet light sources [4]

Group 1 - The core achievement is the successful creation of a new crystal called Ammonium Borofluoride (ABF), which enables the generation of vacuum ultraviolet laser at a wavelength of 158.9 nanometers, providing a key material for compact and efficient solid-state vacuum ultraviolet lasers [1][2] - The development of ABF crystal addresses the challenges of balancing high efficiency and ease of growth in crystal material design, marking a significant advancement in the field of nonlinear optical crystals [2] - The successful creation of ABF crystal signifies an important breakthrough for China in the field of vacuum ultraviolet nonlinear optical crystal materials, contributing positively to maintaining the country's international leading position in this area [2] Group 2 - The research team plans to optimize the growth technology of the ABF crystal to further enhance device performance and develop corresponding laser devices, which will provide stronger support for precision manufacturing and scientific research [2] - The previous milestone material, Potassium Beryllium Fluoride (KBBF), was the only practical crystal capable of stably producing lasers below 200 nanometers, highlighting the significance of the new ABF crystal in advancing laser technology [1] - The breakthrough in laser technology is driven by the increasing demands for output wavelength and energy, necessitating the development of superior new crystal materials [1]

Core Insights - The research team from the Xinjiang Institute of Physics and Chemistry, Chinese Academy of Sciences, has successfully created a new crystal called Ammonium Borofluoride (ABF), enabling the generation of vacuum ultraviolet laser at a wavelength of 158.9 nanometers, marking a significant advancement in laser technology [1][2] - This breakthrough provides a key material for developing compact and efficient solid-state vacuum ultraviolet lasers, which are expected to play a crucial role in precision manufacturing and cutting-edge scientific research [1][2] Group 1 - The ABF crystal represents a solution to the challenges of designing crystal materials that are both highly effective and easy to grow, overcoming the limitations of traditional materials [2] - The successful creation of the ABF crystal signifies an important breakthrough for China in the field of vacuum ultraviolet nonlinear optical crystal materials, contributing positively to maintaining the country's international leading position in this area [2] Group 2 - The research results were published online in the journal "Nature," highlighting the significance of this achievement in the scientific community [1] - The team plans to optimize the growth technology of the ABF crystal and further enhance the performance of devices, while also developing corresponding laser apparatus to support precision manufacturing and scientific research [2]