| 摘要 |
<p>An optical system includes a micromirror array, conjugate to a sample and disposed in incident and/or return optical paths to/from the sample. Micromirrors in the array are imaged onto corresponding lateral locations on the sample. The micromirrors are modulated at unique assigned frequencies. Imaging optics produce a modulated image of the sample at a multi-pixel detector. The image is dispersed in one dimension by a spectrally dispersive element in the return optical path. The detector pixels produce time-varying electrical signals. Lock-in amplifiers or a Fast Fourier Transform module spectrally analyze the time-varying electrical signals. Signal amplitudes at the assigned frequencies determine how much light from a particular lateral location at the sample is present at each detector pixel. The signal amplitudes along the spectral direction, referenced to the lateral location, provide a wavelength spectrum of the sample at the particular lateral location.</p> |
