Shape the unstable laser beam using diffractive optical element array

2010 ◽  
Author(s):  
Yuan-yuan Li ◽  
Chuan-kai Qiu ◽  
Pan Li ◽  
Tingwen Xing ◽  
Wumei Lin ◽  
...  
Keyword(s):  
Laser Beam ◽  
Optical Element ◽  
Diffractive Optical Element ◽  
Element Array

Diffractive optical element used for Nd:YAG laser beam smoothing

2001 ◽  
Author(s):  
Qiaofeng Tan ◽  
Jing Yuan ◽  
Yingbai Yan ◽  
Guofan Jin ◽  
Duanyi Xu
Keyword(s):  
Laser Beam ◽  
Nd:Yag Laser ◽  
Optical Element ◽  
Diffractive Optical Element

scholarly journals STUDY OF FOCUSING INTO CLOSELY SPACED SPOTS VIA ILLUMINATING A DIFFRACTIVE OPTICAL ELEMENT BY A SHORT-PULSE LASER BEAM

2015 ◽  
Vol 39 (2) ◽  
pp. 187-196 ◽  
Author(s):  
S. N. Khonina ◽  
S. A. Degtyarev ◽  
A. P. Porfirev ◽  
O. Yu. Moiseev ◽  
S. D. Poletaev ◽  
...  
Keyword(s):  
Laser Beam ◽  
Pulse Laser ◽  
Short Pulse ◽  
Optical Element ◽  
Diffractive Optical Element ◽  
Pulse Laser Beam ◽  
Short Pulse Laser

scholarly journals Tunable LiNbO3-based diffractive optical element for the control of transverse modes of a laser beam

2021 ◽  
Vol 45 (2) ◽  
pp. 222-226
Author(s):  
A.A. Esin ◽  
A.R. Akhmatkhanov ◽  
V.S. Pavelyev ◽  
V.Y. Shur
Keyword(s):  
Laser Beam ◽  
Single Crystal ◽  
Nonlinear Optical ◽  
Optical Element ◽  
Diffractive Optical Element ◽  
Gaussian Laser Beam ◽  
Transverse Modes ◽  
Ferroelectric Single Crystal

A diffractive optical element based on a nonlinear-optical ferroelectric single crystal has been proposed, synthesized, and experimentally characterized. The element allows fast modulation of transverse modes of a Gaussian laser beam.

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.

High-efficiency subwavelength diffractive optical element in GaAs for 975 nm

1995 ◽  
Vol 20 (12) ◽  
pp. 1441 ◽  
Author(s):  
M. E. Warren ◽  
R. E. Smith ◽  
G. A. Vawter ◽  
J. R. Wendt
Keyword(s):  
High Efficiency ◽  
Optical Element ◽  
Diffractive Optical Element
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