Yang Qinghua, Zhou Renkui, Zhao Baochang
Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119, China.
Appl Opt. 2008 May 1;47(13):2186-91. doi: 10.1364/ao.47.002186.
A new type of interferometer, the moving-optical-wedge interferometer, is presented, and its principle and properties are studied. The novel interferometer consists of one beam splitter, two flat fixed mirrors, two fixed compensating plates, one fixed optical wedge, and one moving optical wedge. The optical path difference (OPD) as a function of the displacement of the moving optical wedge from the zero path difference position is accomplished by the straight reciprocating motion of the moving optical wedge. A large physical shift of the moving optical wedge corresponds to a very short OPD value of the new interferometer if the values of the wedge angle and the refractive index of the two optical wedges are given properly. The new interferometer is not so sensitive to the velocity variation of the moving optical wedge and the mechanical disturbances compared with the Michelson interferometer, and it is very applicable to low-spectral-resolution application for any wavenumber region from the far infrared down to the ultraviolet.
提出了一种新型干涉仪——移动光学楔干涉仪，并对其原理和特性进行了研究。这种新型干涉仪由一个分束器、两个固定平面镜、两个固定补偿板、一个固定光学楔和一个移动光学楔组成。通过移动光学楔的直线往复运动，实现了光程差（OPD）作为移动光学楔从零光程差位置的位移的函数。如果两个光学楔的楔角和折射率的值给定适当，移动光学楔的大物理位移对应于新干涉仪非常短的OPD值。与迈克尔逊干涉仪相比，新干涉仪对移动光学楔的速度变化和机械干扰不太敏感，并且非常适用于从远红外到紫外的任何波数区域的低光谱分辨率应用。
