Share Email Print
cover

Proceedings Paper

Transmission and reflection SHSG holograms
Author(s): Jong Man Kim; Byung So Choi; Yoon Sun Choi; Sun Il Kim; Jong-Min Kim; Hans I. Bjelkhagen; Nicholas J. Phillips
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Silver halide sensitized gelatin (SHSG) holograms are similar to holograms recorded in dichromated gelatin (DCG), the main recording material for holographic optical elements (HOEs). The drawback of DCG is its low energetic sensitivity and limited spectral response. Silver halide materials can be processed in such a way that the final hologram will have properties like a DCG hologram. Recently this technique has become more interesting since the introduction of new ultra- fine grain silver halide (AgHal) emulsions. In particular, high spatial frequency fringes associated with HOEs of the reflection type are difficult to convert employing SHSG processing methods. Therefore, an optimized processing techniques for reflection HOEs recorded in the new AgHal- materials is introduced. Diffraction efficiencies over 90 percent can be obtained for both transmission and reflection diffraction gratings. Understanding the importance of the selective hardening process has made it possible to obtain results similar to conventional DCG processing. The main advantage of the SHSG process is that high-sensitivity recording can be performed with laser wavelengths anywhere within the visible spectrum. This simplifies the manufacturing of high-quality, large-format HOEs, including also high-quality display holograms of the reflection type, both monochrome and full color.

Paper Details

Date Published: 4 June 2001
PDF: 13 pages
Proc. SPIE 4296, Practical Holography XV and Holographic Materials VII, (4 June 2001); doi: 10.1117/12.429461
Show Author Affiliations
Jong Man Kim, Samsung Advanced Institute of Technology (South Korea)
Byung So Choi, Samsung Advanced Institute of Technology (South Korea)
Yoon Sun Choi, Samsung Advanced Institute of Technology (South Korea)
Sun Il Kim, Samsung Advanced Institute of Technology (South Korea)
Jong-Min Kim, Samsung Advanced Institute of Technology (South Korea)
Hans I. Bjelkhagen, De Montfort Univ. (United Kingdom)
Nicholas J. Phillips, De Montfort Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 4296:
Practical Holography XV and Holographic Materials VII
Stephen A. Benton; Sylvia H. Stevenson; T. John Trout; Sylvia H. Stevenson; T. John Trout, Editor(s)

© SPIE. Terms of Use
Back to Top