A dynamically driven micro mirror array as the encoding mask in a Hadamard transform spectrometer (HTS)

The paper deals with a novel setup of a Hadamard transform spectrometer using a micro mirror array as encoding mask. In contrast to previously published papers, the mirrors of the array are driven at frequencies less than their resonant frequency and they are imaged onto a position sensitive detector (PSD). This simplifies the setup and reduces cross coupling between mirrors and the influence of their different resonant frequencies. The paper gives a brief introduction in the entity of the Hadamard transform technique. The driving and detection circuitry is presented here and first measurement results are discussed.