Patterned liquid-crystal optics for broadband coronagraphy and wavefront sensing

David S. Doelman; Frans Snik; Nathaniel Z. Warriner; Michael J. Escuti

doi:10.1117/12.2273406

1 September 2017 Patterned liquid-crystal optics for broadband coronagraphy and wavefront sensing

David S. Doelman; Frans Snik; Nathaniel Z. Warriner; Michael J. Escuti

Author Affiliations +

Proceedings Volume 10400, Techniques and Instrumentation for Detection of Exoplanets VIII; 104000U (2017) https://doi.org/10.1117/12.2273406
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The direct-write technology for liquid-crystal patterns allows for manufacturing of extreme geometric phase patterned coronagraphs that are inherently broadband, e.g. the vector Apodizing Phase Plate (vAPP). We present on-sky data of a double-grating vAPP operating from 2-5 μm with a 360-degree dark hole and a decreased leakage term of ∼ 10⁻⁴ . We report a new liquid-crystal design used in a grating-vAPP for SCExAO that operates from 1-2.5μm. Furthermore, we present wavelength-selective vAPPs that work at specific wavelength ranges and transmit light unapodized at other wavelengths. Lastly, we present geometric phase patterns for advanced implementations of WFS (e.g. Zernike-type) that are enabled only by this liquid-crystal technology.

Citation Download Citation

David S. Doelman, David S. Doelman, Frans Snik, Frans Snik, Nathaniel Z. Warriner, Nathaniel Z. Warriner, Michael J. Escuti, Michael J. Escuti, } "Patterned liquid-crystal optics for broadband coronagraphy and wavefront sensing", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000U (1 September 2017); doi: 10.1117/12.2273406; https://doi.org/10.1117/12.2273406

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years