Grazing incidence holograms and system and method for producing

Details Grazing incidence holograms and system and method for producing Grazing incidence holograms and system and method for producing

1998-01-16

2000-11-21

Spyrou, Cassandra

Optical: systems and elements

Holographic system or element

Having particular recording medium

359 1, 359 32, 359 35, G03H 104

Patent

active

061511420

ABSTRACT:
A method and system are disclosed for recording and displaying grazing-incidence (i.e., steep reference beam angle) holograms supported on a substrate having thin edge-illuminatable geometry. The system and process use thin edge-illuminated substrates that facilitate optimal coupling of the reference light beam at steep angles approaching grazing incidence, while maximizing the contrast of the slanted fringe structures thereof. Different recording techniques are employed when the index of refraction of the substrate is greater than that of the recording medium, than when the index of refraction of the substrate is less than that of the recording medium. A recording and playback system of complementary design is provided for recording slanted-fringe volume holograms under relaxed conditions, without compromising the light diffraction efficiency of the holograms under different playback conditions.

REFERENCES:
patent: 4461533 (1984-07-01), Sherman et al.
H. Kogelnick, "Coupled Wave Theory for Thick Hologram Gratings", The Bell System Technical Journal, vol. 48, No. 9, pp. 2909-2947, Nov. 1969.
T. Kubota, et al., "Method for Reconstructing a Hologram Using a Compact Device", Applied Optics, vol. 31, No. 23, pp. 4734-4737, Aug. 1992.

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