Recording a phase hologram having reduced intermodulation distor

Details Recording a phase hologram having reduced intermodulation distor Recording a phase hologram having reduced intermodulation distor

1976-05-07

1977-10-18

Stern, Ronald J.

G03H 104

Patent

active

040543587

ABSTRACT:
A moveable mask with a pin hole therethrough is disposed between a source of an object beam and a holographic recording medium. The pin hole limits the angular range of rays of the object beam transmitted to the medium, thereby preventing intermodulation distortion caused by rays of the object beam that have large angles therebetween. The mask may be moved to cause all of the rays of the object beam to pass through the pin hole, whereby a hologram is recorded.

REFERENCES:
patent: 3516721 (1970-06-01), Collier et al.
Carlsen, Applied Optics, vol. 13, No. 4, Apr. 1974, pp. 896-903.
Som et al., Jour. of the Optical Society of America, vol. 61, No. 9, Sept. 1971, pp. 1240-1245.

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