【摘要】 <正> 反射光栅光谱仪是一种高分辨率的仪器,广泛地应用在光谱测量中.光栅光谱仪比起法—珀干涉仪测量波长其精度差些,但它工作起来方便,测量较快.本文工作是研究反射光栅光谱仪作为亚毫米波长的测量.我们用HCN 亚毫米波激射器作为实验用光源,也以它的337μm 谱线作为校准波长,以校验反射光栅光谱仪的测量准确度.激光器更多还原

【Abstract】 A reflection grating has been constructed for millimeter and submillimeter wa-ves.A HCN laser with quartz spacers for frequency stabilization is used as sub-millimeter wave source which operates at the wavelength of 0.337mm and has an out-put power of 2 to 4.5 mw.Reflection gratings with different kinds of grooves aremade.The construction and optical properties of the grating spectrometer aredescribed.The reflection grating spectrometer is suitable for millimeter and sub-millimeter wavelength measurement with accuracy better than 2-3%.更多还原