Novel conception of the terahertz-range spectrometer based on Fabry-Perot interferometer

Fast-scanning fabry-perot spectrum analyzer with continuously tunable resolution

“…This concept was previously pursued with copper mesh mirrors [1], and then modified with metallized dielectric mirrors [2]. The FPSA has advantages over TDS systems because average THz pulse power is collected, rather than measuring an individual pulse through cross-correlation, so precision pulse propagation distances are not necessary.…”

“…The FPSA is also easy to couple signal into, and scans have been taken in as little as 1/20 th of a second [1]. Importantly, the FPSA has recently been proven capable of accurately reproducing a THz spectrum [2].…”