Abstract

Laser images and holographic reconstructions are highly affected by dust and imperfections present in various optical components of the imaging system, which create noiselike structures in the final images. To reduce this speckle noise, a phase plate based on a frequency-modulated zone plate is proposed. It can be fabricated by holographic techniques, and it does not require a separate Fourier transforming lens. Experimental results are presented showing the capabilities of the phase plate.

© 1979 Optical Society of America

Noise elimination technique in holography

P. K. Katti and P. C. Mehta
Appl. Opt. 15(2) 530-533 (1976)

Holographic image formation using phase plates with incoherent imaging property

Akio loka and Koichiro Kurahashi
Appl. Opt. 15(7) 1787-1794 (1976)

Quantum Noise in Fresnel Zone Plate Imaging

H. H. Barrett and G. D. DeMeester
Appl. Opt. 13(5) 1100-1109 (1974)

Grating modulated phase plates for holographic storage

Akio loka and Koichiro Kurahashi
Appl. Opt. 14(9) 2267-2273 (1975)

Optically produced linear zone plates

C. Gomez-Reino, J. Martinez Cuadrado, and M. V. Perez Martin
Appl. Opt. 18(17) 3032-3034 (1979)