| Autor: |
Branigan E, Martin S, Sheehan M, Murphy K |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2023 Mar 13; Vol. 31 (6), pp. 9466-9480. |
| DOI: |
10.1364/OE.479357 |
| Abstrakt: |
An analog holographic wavefront sensor (AHWFS), for measurement of low and high order (defocus and spherical aberration) aberration modes has been developed as volume phase holograms in a photopolymer recording medium. This is the first time that high order aberrations such as spherical aberration can be sensed using a volume hologram in a photosensitive medium. Both defocus and spherical aberration were recorded in a multi-mode version of this AHWFS. Refractive elements were used to generate a maximum and minimum phase delay of each aberration which were multiplexed as a set of volume phase holograms in an acrylamide based-photopolymer layer. The single-mode sensors showed a high degree of accuracy in determining various magnitudes of defocus and spherical aberration generated refractively. The multi-mode sensor also exhibited promising measurement characteristics and similar trends to the single-mode sensors were observed. The method of quantifying defocus was improved upon and a brief study into material shrinkage and sensor linearity is presented. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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