AI Article Synopsis
- A diffractive phase element (DPE) can precisely control the position and energy of multiple filament structures formed in fused silica with femtosecond laser pulses.
- This technique allows researchers to create controlled three-dimensional arrangements of filaments, spaced just micrometers apart, facilitating the study of their interactions through interference patterns without complex setups like a two-arm interferometer.
- Using a spatial light modulator (SLM) to encode the DPE enhances the optical system's flexibility, making it easier to adapt and implement various DPE designs in real-time for advanced applications.
Article Abstract
We show that a simple diffractive phase element (DPE) can be used to manipulate at will the positions and energy of multiple filaments generated in fused silica under femtosecond pulsed illumination. The method allows obtaining three-dimensional distributions of controlled filaments whose separations can be in the order of few micrometers. With such small distances we are able to study the mutual coherence among filaments from the resulted interference pattern, without needing a two-arm interferometer. The encoding of the DPE into a phase-only spatial light modulator (SLM) provides an extra degree of freedom to the optical set-up, giving more versatility for implementing different DPEs in real time. Our proposal might be particularly suited for applications at which an accurate manipulation of multiple filaments is required.
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| http://dx.doi.org/10.1364/OE.24.015307 | DOI Listing |
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