Highly transparent wave front printed volume holograms realized by amplitude-modulated incoherent pre-illumination

Tobias Wilm; Max Wieland; Reinhold Fiess; Wilhelm Stork

doi:10.1117/12.2647361

8 March 2023 Highly transparent wave front printed volume holograms realized by amplitude-modulated incoherent pre-illumination

Tobias Wilm, Max Wieland, Reinhold Fiess, Wilhelm Stork

Author Affiliations +

Proceedings Volume 12445, Practical Holography XXXVII: Displays, Materials, and Applications; 124450S (2023) https://doi.org/10.1117/12.2647361
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

We present highly transparent, wave front printed volume holographic optical elements (vHOEs), realized with a new recording method based on the pre-illumination of incoherent light patterns. The introduced amplitudemodulated pattern illuminates a distinct area on the unexposed, photopolymer-based holographic recording material prior to the hologram recording sequence. The incoherent pre-illumination scheme enables a precise tuning of the material’s local photosensitivity without the formation of a holographic volume diffraction grating. As a consequence, the pre-illumination exposure significantly suppresses the formation of transparency diminishing structures in the material that are formed concurrently with the volume diffraction grating during the hologram recording sequence. The pre-illumination component is integrated in an extended immersion-based wave front printing setup, which realizes vHOEs by sequentially recording single holographic elements in an array-like structure. A wide range of different recording configurations is enabled by our recording setup due to independent modulation of both wave fronts and the possibility to realize large off-axis recording angles. We introduce two hologram characterization methods, based on a diffraction efficiency and a slanted-edge method analysis, which are used to evaluate the implemented pre-illumination method and demonstrate significant improvements to the see-through quality of the presented wave front recorded vHOEs.

Citation Download Citation

Tobias Wilm, Max Wieland, Reinhold Fiess, and Wilhelm Stork "Highly transparent wave front printed volume holograms realized by amplitude-modulated incoherent pre-illumination", Proc. SPIE 12445, Practical Holography XXXVII: Displays, Materials, and Applications, 124450S (8 March 2023); https://doi.org/10.1117/12.2647361

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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