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Updated: Dec 25, 2025

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Ultrafast optomechanical pulse picking.

Nikolai Lilienfein1, Simon Holzberger1,2, Ioachim Pupeza1

  • 11Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.

Applied Physics. B, Lasers and Optics
|March 28, 2020
PubMed
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A novel optomechanical switching method uses reflective elements for high-power optical pulse selection. This technique avoids damage thresholds and nonlinear effects, enabling higher pulse energies and faster switching rates.

Area of Science:

  • Optics
  • Mechanical Engineering
  • Laser Technology

Background:

  • Current optical switches (electro-optic, acousto-optic) use transmissive elements, limiting high-power applications due to damage thresholds and nonlinear effects.
  • These limitations hinder improvements in pulse energy, duration, and average power for optical systems.

Purpose of the Study:

  • To introduce a new optomechanical switching concept for optical pulse selection.
  • To overcome the limitations of transmissive optical switches in high-power applications.

Main Methods:

  • Proposed an optomechanical switching concept utilizing only reflective elements.
  • Implemented a system with high-speed rotating mirrors and stationary imaging mirrors to move an isolated beam path section.
  • Investigated three variants of the concept and analyzed parameters for regenerative amplifiers and enhancement cavities.
Keywords:
AstigmatismBeam PathDeflection AngleOutput CouplerPulse Train

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Main Results:

  • The optomechanical switching concept is suitable for switching times down to the ten-nanosecond range.
  • The method avoids the damage threshold and nonlinear/thermal issues associated with transmissive elements.
  • Potential for switching rates up to tens of kilohertz and supporting pulse energies up to several joules.

Conclusions:

  • Optomechanical pulse picking offers a promising alternative for high-power optical switching.
  • This approach can significantly enhance the performance of laser systems like regenerative amplifiers and enhancement cavities.