1-D laser beam shaping using an adjustable binary diffractive optical element

2004 ◽  
Vol 241 (4-6) ◽  
pp. 465-473 ◽  
Author(s):  
Nicolas Passilly ◽  
Michael Fromager ◽  
Laurence Mechin ◽  
Chantal Gunther ◽  
Sylvain Eimer ◽  
...  
Keyword(s):  
Laser Beam ◽  
Optical Element ◽  
Beam Shaping ◽  
Diffractive Optical Element ◽  
Laser Beam Shaping

scholarly journals Holographic Display System to Suppress Speckle Noise Based on Beam Shaping

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 204
Author(s):  
Di Wang ◽  
Yi-Wei Zheng ◽  
Nan-Nan Li ◽  
Qiong-Hua Wang
Keyword(s):  
Optical Element ◽  
Speckle Noise ◽  
Beam Shaping ◽  
Diffractive Optical Element ◽  
The Other ◽  
Spatial Light Modulators ◽  
Viewing Angle ◽  
Display System ◽  
Holographic Display ◽  
Light Modulators

In this paper, a holographic system to suppress the speckle noise is proposed. Two spatial light modulators (SLMs) are used in the system, one of which is used for beam shaping, and the other is used for reproducing the image. By calculating the effective viewing angle of the reconstructed image, the effective hologram and the effective region of the SLM are calculated accordingly. Then, the size of the diffractive optical element (DOE) is calculated accordingly. The dynamic DOEs and effective hologram are loaded on the effective regions of the two SLMs, respectively, while the wasted areas of the two SLMs are performed with zero-padded operations. When the laser passes through the first SLM, the light can be modulated by the effective DOEs. When the modulated beam illuminates the second SLM which is loaded with the effective hologram, the image is reconstructed with better quality and lower speckle noise. Moreover, the calculation time of the hologram is reduced. Experiments indicate the validity of the proposed system.

scholarly journals Tailored laser beam shaping for efficient and accurate microstructuring

2018 ◽  
Vol 124 (2) ◽  
Author(s):  
T. Häfner ◽  
J. Strauß ◽  
C. Roider ◽  
J. Heberle ◽  
M. Schmidt
Keyword(s):  
Laser Beam ◽  
Beam Shaping ◽  
Laser Beam Shaping

Laser Beam Shaping in Array-Type Laser Printing Systems

2017 ◽  
pp. 57-115
Author(s):  
Andrew F. Kurtz ◽  
Daniel D. Haas ◽  
Nissim Pilossof
Keyword(s):  
Laser Beam ◽  
Beam Shaping ◽  
Laser Beam Shaping ◽  
Array Type ◽  
Laser Printing

High-precision laser beam shaping using a binary-amplitude spatial light modulator

2010 ◽  
Vol 49 (8) ◽  
pp. 1323 ◽  
Author(s):  
Jinyang Liang ◽  
Rudolph N. Kohn, Jr. ◽  
Michael F. Becker ◽  
Daniel J. Heinzen
Keyword(s):  
Laser Beam ◽  
High Precision ◽  
Spatial Light Modulator ◽  
Beam Shaping ◽  
Laser Beam Shaping ◽  
Light Modulator
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