title: A simple terahertz spectrometer based on a low-reflectivity Fabry-Perot interferometer using Fourier transform spectroscopy.
abstract: A simple terahertz (THz) Fourier transform spectrometer is theoretically and experimentally demonstrated with a low-reflectivity Fabry-Perot interferometer. Composed with only two parallel low reflectivity surfaces, this simple spectrometer has the ability to measure the spectrum over more than one octave with a controllable resolution. The emission spectra of a wavelength-tunable photonic transmitter excited by an optical coherent control system are determined by the spectrometer. With a simple algorithm for the spectral reconstruction and a compact structure with easy alignment, the demonstrated spectrometer will meet the needs of many important applications where a compact and convenient spectrometer is required in the frequency range from sub-THz wave up to even visible light.
authors.forename: Li-Jin
authors.initials: LJ
authors.lastname: Chen
authors.forename: Tzeng-Fu
authors.initials: TF
authors.lastname: Kao
authors.forename: Ja-Yu
authors.initials: JY
authors.lastname: Lu
authors.forename: Chi-Kuang
authors.initials: CK
authors.lastname: Sun