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/

Global: Zendy Plus annual

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

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In the last two decades many people have been searching for the optimalwavefront sensor as it can boost the performance of high-contrast imagining byorders of magnitude on the ELTs. According classical information theory, theoptimal sensitivity of a wavefront sensor is 1/2 radian rms per photon. We showthat classical limit is also the quantum metrology limit for starlight, whichmeans that 1/2 radian rms per photon is really the limit. This proceedingintroduces the Phase Induced Amplitude Apodized Zernike Wavefront sensor. ThePIAA-ZWFS modifies a standard ZWFS with a set of aspheric lenses to increaseits sensitivity. The optimized system reaches the fundamental limit for allspatial frequencies >1.7 cycles/pupil and is very close to the limit for thespatial frequencies <1.7 cycles/pupil. The PIAA-ZWFS can be seamlesslyintegrated with the PIAA-CMC coronagraphy. This makes the PIAA-ZWFS an idealcandidate as wavefront sensor for high-contrast imaging.

Reaching the fundamental sensitivity limit of wavefront sensing on  arbitrary apertures with the Phase Induced Amplitude Apodized Zernike  Wavefront Sensor (PIAA-ZWFS)