The high-gain free electron laser is much better than the third-generation synchrotron light source in brightness, coherence and time structure, and it is a new generation of large-scale scientific device competing internationally. At present, the working modes of free electron lasers are mainly self-amplified spontaneous emission (SASE) and high-gain harmonic generation (HGHG). HGHG requires precise interaction between a short pulse laser and a high-quality electron beam. The technology is more complicated, but its performance is better than SASE.
After years of technical accumulation and hard work, the Shanghai Deep Ultraviolet Free Electron Laser Device (SDUV-FEL) successfully achieved saturation in HGHG mode in mid-December 2010. Another major progress has been made in the realization of external seed free electron laser (including HGHG and echo) modulation experiments. It makes China the second country in the world to realize the amplification and saturation of HGHG free electron laser after the United States, marking that China has entered the world's advanced ranks in the field of free electron laser experimental research.
The successful completion of the Shanghai Deep Ultraviolet Free Electron Laser (HGHG mode) shows that China has basically mastered the main key technologies of short-wavelength out-of-seed free electron lasers, laying a foundation for the future development of China's X-ray free electron laser large scientific devices .
Waterproof Diapers,Newborn Baby Diapers,Biodegradable Diapers,Best Disposable Diapers
Shandong Tianzige International Trade Co., Ltd , https://www.tianzigedipers.com