An mid-infrared Fourier-transform spectrometer applied to modal characterization of silver halide fiber

Analysis and swing control of optical path scanning model of double-moving mirror swing interferometer

“…In order to improve the performance of the interferometer, various improvements have been proposed. Grille R et al proposed an interferometer based on a corner reflector 4 , which utilizes the characteristic that the beam reflected by the corner reflector is always parallel to the incident beam, thereby reducing the collimation accuracy requirements for the fixed mirror. But the vertex offset of the corner reflector will have an impact.…”

A High Optical Throughput Spectral Imaging Technique Using Broadband Filters

“…However, LCTF adopts a polarizer for polarization and bias detection, which makes the light energy utilization low, and the detector needs to use a low-light wideband detector or an intensifier, which is not conducive to target detection and identification and limits the practical application. For an interferometric imaging spectrometer [15][16][17][18][19], a time-modulated fast Fourier transform (FFT) spectroscopic imager using a Michelson interferometer as the spectroscopic element can only obtain an interferogram of a 2D scene with one optical range difference at a time, relying on the scanning motion of a moving mirror to produce an interferogram with a different optical range. There is a need for accurate position scanning due to the reliance on moving mirrors to change the optical range, and a large amount of moving mirror movement can increase the size of the system when an increased spectral resolution is required.…”