为了诊断基于激光的短脉冲、高强度的高能X射线源能谱特性,本文利用不同材料和厚度的金属滤片和记录介质研制了一套滤片堆栈谱仪。基于Greval算法发展了能谱反解程序,并使用蒙特卡罗程序Geant4模拟得到了谱仪的响应函数。在星光Ⅲ激光装置上验证了谱仪的可靠性,获得了ps激光与固体靶相互作用产生的10 keV~3 MeV轫致辐射能谱,从而验证了谱仪的可靠性。 In order to diagnose the energy characteristics of high energy X-ray source based on short pulse and high intensity of laser, a filter stack spectrometer was developed by using metal filter and recording medium of different materials and thickness. Based on the Greval algorithm, the spectral anti-resolution program was developed and the response function of the spectrometer was simulated by using the Monte Carlo program Geant4. The reliability of the spectrometer was verified on a Star III laser and the 10 keV ~ 3 MeV induced emission spectra obtained from the interaction between the ps laser and the solid target were obtained. The reliability of the spectrometer was verified.