English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A perfectly collimated beam can be spread out by multiple scattering,creating a speckle pattern and increasing the etendue of the system. Standardoptical systems conserve etendue, and thus are unable to reverse the process bytransforming a speckle pattern into a collimated beam or, equivalently, into asharp focus. Wavefront shaping is a technique that is able to manipulate theamplitude and/or phase of a light beam, thus controlling its propagationthrough such media. Wavefront shaping can thus break the conservation ofetendue and, in principle, reduce it. In this work we study how much of theenergy contained in a fully developed speckle pattern can be converted into ahigh quality (low M2) beam, and discuss the advantages and limitations of thisapproach, with special attention given to the inherent variability in thequality of the output due to the multiple scattering.

Wavefront shaping to improve beam quality: converting a speckle pattern into a Gaussian spot