Reconfigurable compound diffraction grating

摘要: A reconfigurable compound diffraction grating is fabricated using microelectomechanical systems (MEMS) technology. The structure can be viewed as the superposition of two separately configured gratings. common lower electrode placed beneath selected beam elements, known deflectable beams, to achieve desired configuration (i.e. every other, third, fifth, etc.) beams in primary grating. These alone comprise a secondary, resolution structure. elements are linked upper electrode. Voltage applied across electrodes creates an electrostatic force that pulls down toward underlying Changing vertical position with respect other stationary presents different ruling spacing distribution incoming radiation. By changing this distribution, diffracted power among individual orders wavelengths altered. Controlling signal way allows for specific passbands fixed on particular detector or area detector. Automated adjustments rulings very rapidly, which would significantly simplify and reduce time necessary complete spectral analysis previously achieved by mechanical movement