用负温度高能离子束的相对论多普勒效应实现从红外到X射线连续调谐激光器

利用负温度高能离子束的相对论多普勒效应,可能实现从红外到X射线连续调谐激光器。调谐范围△ν_T=2ν₀βγ。离子束从零到c调速时,激光频率为0—∞。本文给出了激光参数的相对论变换式,计算了负温度相对论离子束激光器的增益、阈值和输出特性,提出了用激光束对相对论离子束进行共振激发的方法,并讨论了He⁺离子束及Ar⁺离子束激光器的设计参数。关键词：

CONTINUOUSLY TURNABLE LASER FROM INFRARED TO X-RAY REGION BY USING THE RELATIVISTIC DOPPLER EFFECT OF HIGH ENERGY ION BEAM IN NEGATIVE TEMPERATURE STATE

It is shown that a laser by using the relativistic Doppler effects of high energy ion beam in negative temperature state will be continuously turnable from infrared to X-ray region. The turnability range is △ν_T=2ν₀βγ. The relativistic fransform of the laser parameters are given, and the gain, threshold" and output parameters of the relativistic ion beam laser are calculated in the present work. The methods to excite ion beam by means of laser are analysed. The design of He⁺ and Ar⁺ ion beam lasers are also discussed.