scholarly journals Surface Exposure Technology of Metal Powder Based on an Optically-Addressed Liquid Crystal Spatial Light Modulator

2021 ◽  
Vol 11 (8) ◽  
pp. 3647
Author(s):  
Ying Cai ◽  
Dajie Huang ◽  
He Cheng ◽  
Gang Xia ◽  
Wei Fan
Keyword(s):  
Liquid Crystal ◽  
Additive Manufacturing ◽  
Spatial Light Modulator ◽  
Short Pulse ◽  
Processing System ◽  
Damage Threshold ◽  
Laser Source ◽  
Light Modulator ◽  
Short Pulse Laser ◽  
Nanosecond Pulsed Laser

Compared with the current mature point scanning metal additive manufacturing technology, the surface exposure technology by laser additive manufacturing can accelerate the construction speed, and the short pulse laser is expected to improve the resolution. Here, a surface exposure technology processing system was constructed based on a nanosecond pulsed laser source and an optically-addressed liquid crystal spatial light modulator with a damage threshold higher than 500 mJ/cm2. The resolution of the surface exposure processing system is proved to be about 100 μm.

Coherent Phonon Materials for Laser Applications

1993 ◽  
Vol 329 ◽  
Author(s):  
T. K. Cheng ◽  
J. Vidal ◽  
H. J. Zeiger ◽  
E. P. Ippen ◽  
G. Dresselhaus ◽  
...  
Keyword(s):  
Lattice Dynamics ◽  
Short Pulse ◽  
Laser Source ◽  
Coherent Phonon ◽  
Lattice Vibrations ◽  
Narrow Gap ◽  
Light Modulator ◽  
Laser Applications ◽  
Short Pulse Laser ◽  
The Time Domain

AbstractWith the development of the short pulse laser source, it has been demonstrated that molecular [1–4] and lattice dynamics [5–7] can be studied in the time domain. Pulses of light that are short compared to the optical phonon period have been found to initiate coherent lattice vibrations through various mechanisms which depend on the material type. The purpose of this paper is to describe the observation of the coherent phonon phenomenon in semimetals and narrow-gap semiconductors, and to propose a potential application of this phenomenon as a terahertz light modulator.

scholarly journals Advances in Ultra Short Pulse Laser based Parallel Processing using a Spatial Light Modulator

2012 ◽  
Vol 39 ◽  
pp. 650-660 ◽  
Author(s):  
G. Dearden ◽  
Z. Kuang ◽  
D. Liu ◽  
W. Perrie ◽  
S.P. Edwardson ◽  
...  
Keyword(s):  
Parallel Processing ◽  
Pulse Laser ◽  
Spatial Light Modulator ◽  
Short Pulse ◽  
Light Modulator ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

128 x 128 analog liquid crystal spatial light modulator

1995 ◽  
Author(s):  
Steven A. Serati ◽  
Gary D. Sharp ◽  
Roylnn A. Serati ◽  
Douglas J. McKnight ◽  
Jay E. Stockley
Keyword(s):  
Liquid Crystal ◽  
Spatial Light Modulator ◽  
Light Modulator
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