CAJ | 학술논문

SASE自由电子激光可以产生短至0.1nm的高亮度(峰值亮度比当前的第三代同步辐射高10个量级；平均亮度高3～5个量级)、短脉冲(脉冲长度小于2个量级，达到亚皮秒水平)硬X射线相干光。因而被称为是继第三代同步辐射之后的第四代光源。SASE依据的是高增益自由电子激光原理，利用了光阴极微波电子枪技术和电子直线加速器技术。综述了SASE的历史发展、基本原理、基本结构、主要物理特征和对电子束的要求。
SASE자유전자격광가이산생단지0.1nm적고량도(봉치량도비당전적제삼대동보복사고10개량급；평균량도고3～5개량급)、단맥충(맥충장도소우2개량급，체도아피초수평)경X사선상간광。인이피칭위시계제삼대동보복사지후적제사대광원。SASE의거적시고증익자유전자격광원리，이용료광음겁미파전자창기술화전자직선가속기기술。종술료SASE적역사발전、기본원리、기본결구、주요물리특정화대전자속적요구。
As the fourth generation light source hard X-ray SASE free-electron laser has many unique properties superior to the 3rd synchrotron radiation: higher brightness (ten orders of magnitude of peak spectral bribhteness and three～five orders of magnitude of average brightness greater than the 3rd synchrotron radiation currently acjhieved), shorter pulse (two orders of magnitude of pulse duration shorter than the 3rd synchrotron radiation, down to sub-picosecond), shorter wavelength down to 0.1nm etc.. SASE is based on the principle of high gain free electron lasers, and technologies of photoinjector and linear accelerator. The development history of SASE, the basic theory, the typical configuration, the main physical characteristics and the requirements for electron beam is described.