Developing a Wyne Corrector for higher spectral bandwidth focal plane wavefront sensing

TL;DR

This paper presents the design and testing of a Wyne corrector that significantly increases the spectral bandwidth for focal plane wavefront sensing, enabling faster and more effective optical measurements.

Contribution

The paper introduces a novel Wyne corrector design that extends spectral bandwidth capabilities for focal plane wavefront sensing up to 50%.

Findings

Prototype testing shows promising optical performance.

Tolerancing analysis confirms manufacturability.

Potential for high-speed wavefront sensing applications.

Abstract

Focal plane wavefront sensing techniques are generally limited to using imaging systems that have below 1% spectral bandwidths, due to the radial smearing of speckles from chromatic diffraction that causes optical image magnification over larger spectral bandwidths. Wyne (1979) designed a pair of triplet lenses to optically minimize this chromatic magnification and increase the spectral bandwidth. Such a Wyne corrector could enable focal plane wavefront sensing at up to 50% spectral bandwidths and as a result open enable $>50x$ higher-speed focal plane wavefront sensing. We present results of the design and laboratory testing of a Wyne corrector prototype, including a detailed tolerancing analysis considering manufactural wavelength ranges and alignment tolerances. These tests show promising results that this technology can be deployed to current and future high speed focal plane wavefront sensing instruments to enable significant performance enhancements. This document number is LLNL-ABS-857246.