Publication

Large linear micromirror array for UV femtosecond laser pulse shaping

Nico de Rooij, Jonathan Leon Wolf
2008
Conference Papers

Abstract

We are fabricating a bulk-micromachined micromirror device for laser pulse shaping applications on femtosecond time scales. An array of micromirrors is used to individually retard or diminish certain laser frequencies spanning from the UV to the near-infrared. The individual mirrors are fixed by two springs on either side and can be tilted (amplitude modulation)or moved out-of plane (phase modulation) using asymmetrical or symmetrical vertical comb drives, respectively.

Official source

https://infoscience.epfl.ch/entities/publication/585af83e-f705-415c-bd3a-8f941fc9d70c

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Nico de Rooij, Jonathan Leon Wolf
2008
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/585af83e-f705-415c-bd3a-8f941fc9d70c

About this result

Related concepts (20)

Amplitude modulation

Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave. In amplitude modulation, the amplitude (signal strength) of the wave is varied in proportion to that of the message signal, such as an audio signal. This technique contrasts with angle modulation, in which either the frequency of the carrier wave is varied, as in frequency modulation, or its phase, as in phase modulation.

Phase modulation

Phase modulation (PM) is a modulation pattern for conditioning communication signals for transmission. It encodes a message signal as variations in the instantaneous phase of a carrier wave. Phase modulation is one of the two principal forms of angle modulation, together with frequency modulation. In phase modulation, the instantaneous amplitude of the baseband signal modifies the phase of the carrier signal keeping its amplitude and frequency constant.

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted. For example, the modulation signal might be an audio signal representing sound from a microphone, a video signal representing moving images from a video camera, or a digital signal representing a sequence of binary digits, a bitstream from a computer.

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