An ultra-high power laser device for studying extreme state physics-the first ultra-high power Ti: sapphire laser device with an output power of 300TW(3× 10 14W) in China has been successfully operated in Mianyang, Sichuan recently. It is recognized by international peers as the highest power femtosecond laser device that can run stably in the world at present.

Researcher Peng Hansheng, director of the State Key Laboratory of Plasma Physics, China Academy of Engineering Physics, said that Gao

Ultrashort pulse laser technology is one of the most advanced research topics in the field of intense laser in recent years. Only a few laboratories in the world have the technical foundation and ability to develop ultra-high power Ti: sapphire laser devices with output power of several hundred TW. Such a strong laser can produce extreme physical conditions in the laboratory that cannot be achieved by other technical means, such as an electric field per centimeter 1 trillion volts, a magnetic field of 1 billion gauss, a pressure of 1 billion pa, and similar material density and temperature in a star, which is helpful to laser fusion, overheated substances, strong radiation sources, laser particle acceleration, new light sources, astrophysics and relativity.

The overall design of 300TW laser device has carefully integrated many latest research results of femtosecond laser technology and high-power solid-state laser technology, and its overall performance and technical indicators have reached the international leading level. A new technical means of precise adjustment of pulse compression system is created, and the super-Gaussian beam shaping and image shifting technology are introduced into femtosecond laser system for the first time, and the best beam focusing characteristics and pulse compression characteristics of similar laser devices in the world are obtained. The device has three output stages of 5TW, 30TW and 300TW, and each gradation has an experimental target room, which can meet the different needs of various application studies. The equipment was manufactured in early 2004. Up to now, it has provided many rounds of shooting operations for physics experiments, which has withstood the test of high power output for a long time. It is the only femtosecond laser device in the world that can stably run at 100 TW output power.