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Femtosecond pulse shaping using a two-dimensional liquid-crystal spatial light modulator.

E Frumker1, Y Silberberg

  • 1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel. evgenyf@weizmann.ac.il

Optics Letters
|June 5, 2007
PubMed
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We developed a fast femtosecond pulse shaper using a 2D liquid crystal on silicon spatial light modulator (SLM). This technology achieves high-rate waveform generation with over 100 kHz update rates, significantly faster than conventional methods.

Area of Science:

  • Optics and Photonics
  • Ultrafast Science
  • Materials Science

Background:

  • Femtosecond pulse shaping is crucial for controlling light-matter interactions.
  • Traditional spatial light modulator (SLM)-based pulse shapers face limitations in speed and complexity.
  • Need for high-rate, programmable pulse shaping for advanced applications.

Purpose of the Study:

  • To introduce a novel, high-rate scanning femtosecond pulse shaper.
  • To leverage a 2D liquid crystal on silicon (LCoS) SLM for enhanced performance.
  • To demonstrate significant speed improvements over existing technologies.

Main Methods:

  • Utilized a 2D LCoS spatial light modulator (SLM) with 1920x1080 pixels.
  • Implemented a scanning mechanism across the vertical dimension of the SLM.

Related Experiment Videos

  • Developed a programmable system for complex waveform generation.

    • Main Results:

    • Achieved superior fidelity in generating complex optical waveforms.
    • Demonstrated a speed increase of at least 3 orders of magnitude compared to typical SLM pulse shapers.
    • Exceeded an update rate of 100 kHz.

    Conclusions:

    • The developed LCoS-based pulse shaper offers unprecedented speed and programmability.
    • This advancement facilitates new possibilities in ultrafast optics and spectroscopy.
    • The system provides a robust platform for high-rate control of femtosecond laser pulses.