Fabry-Perot with an absorbing etalon cavity.
Fabry-Perot with an absorbing etalon cavity.
复制标题
带有吸收标准具腔的法布里-珀罗。
作者：
G. Hernandez
研究了腔内有吸收介质的法布里-珀罗涉仪的特性。当使用非常大的反射精细标准具时，干涉仪表现为具有增益的长程吸收池，其定义为在与标准具间隔相同的路径上测量的吸收与样品吸收的比率，等于c1/2。(C是标准具对比度。)实际考虑使法布里-珀罗平面不适合这种用途，因为相当大的面积和表面精细度要求。另一方面，球形法布里-珀罗不受面积要求的限制，因此似乎是长程吸收池的选择标准具。结果还表明，干涉滤光片由于其高反射细度而具有吸收效应，从而降低了其最终性能。
The properties of the Fabry-Perot interferometer with an absorbing medium in the cavity have been investigated. When very large reflective finesse etalons are used, the interferometer behaves as a long-path absorption cell with a gain, defined as the ratio of the measured absorption over the sample absorption for the same path as the etalon spacer, equal to C1/2. (C is the etalon contrast.) Practical considerations make the plane Fabry-Perot unsuitable for this use because of the rather large area and surface finesse requirements. The spherical Fabry-Perot, on the other hand, is not constrained in the area requirement and thus appears to be the choice etalon for a long-path absorption cell. The results also show that interference filters, because of their high reflective finesse, have absorption effects which degrade their ultimate performance.