Integrated microspectrometers implemented in silicon photonic chips have gathered a great interest for diverse applications such as biological analysis, environmental monitoring, and remote sensing. These often demand high spectral resolution, broad operational bandwidth, large optical throughput. Spatial heterodyne Fourier-transform (SHFT) spectrometers been proposed to overcome the limited th...

We highlight chemistry and trend measurement results from the Atmospheric Chemistry Experiment (ACE) which is providing precise middle troposphere to the lower thermosphere measurements with a 0.02 cm resolution Fourier transform spectrometer covering 750-4400 cm.

Coherent synchrotron radiation (CSR) in the steady state and bursting mode is generated. The emitted radiation is analysed in the time and frequency domain. A step mode Fourier transform (FT) spectrometer is applied to analyse bursting CSR.

A method is presented for using a Fourier transform spectrometer (FTS) to calibrate the metrology of a second FTS. This technique is particularly useful when the second FTS is inside a cryostat or otherwise inaccessible.