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The 239th Oriental Science and Technology Forum, themed “Structural Design and Performance Control of High-Power Laser Materials,†recently took place in Shanghai. The event brought together leading experts and academicians who discussed ways to enhance collaboration and achieve significant breakthroughs in the development of high-power laser materials.
Fan Qiyuan, the conference chair and member of the Chinese Academy of Engineering, delivered a keynote speech titled “Development Status and Trends of Laser Materials for Inertial Confinement Nuclear Fusion Systems.†In his address, he emphasized that laser technology is one of the eight key cutting-edge fields outlined in China’s medium- and long-term science and technology planning. He highlighted that laser materials serve as the core foundation of laser technology, playing a crucial role in its advancement and innovation.
Participants at the forum noted that the laser manufacturing industry in China is experiencing rapid growth and is increasingly being integrated into various sectors. Particularly notable are the applications of laser weapon technology and laser inertial confinement fusion. Globally, countries such as the United States, Japan, the European Union, and Russia are actively advancing research in laser inertial confinement nuclear fusion. In response, China has included the laser fusion ignition project among its 16 major scientific and technological initiatives.
Currently, most fusion laser drivers use erbium-doped glass as the gain medium. However, due to the low thermal conductivity of this material, the system's ability to operate at high repetition rates is limited. Additionally, existing erbium-doped laser glasses fail to meet the stringent requirements of next-generation fusion energy laser drivers. As a result, there is an urgent need to develop new laser materials with improved performance, higher thermal stability, and greater efficiency to support the future of laser-based nuclear fusion technologies.
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