View
61
Download
0
Category
Preview:
DESCRIPTION
Grating. Diffraction grating Amplitude ,phase Binary grating Blazed grating. n. 1. Computer Generated hologram. Hologram:. Computer generated hologram:. Complex function to phase only function. Complex 2 phase encoding. Gray level encoding:. Binary encoding (1 st order):. - PowerPoint PPT Presentation
Citation preview
Diffraction grating
Amplitude ,phase
Binary grating
Blazed grating
Grating
n 1 0h0 0
2( 1)n h
Computer Generated hologram
2 2( , ) ( , ) 2 ( , ) cos[2 ( , )]x Tt x y T x y R RT x y v x x y
Hologram:
Complex function to phase only function
( , ) 2 ( , ) cos[2 ( , )]x Tt x y RT x y v x x y
Computer generated hologram:
1 2 ( , ) 2 asin ( , ) 2( , )
0x Tx x y T x y n
f x yotherwise
max 0( , ) ( , ) (2 ) ( , )yx y a x y q y b x y
Binary encoding (1st order):
Gray level encoding:
Binary phase encoding Binary amplitude encoding
Complex 2 phase encoding
Recommended