scholarly journals Two-pixel computer-generated hologram with a zero-twist nematic liquid-crystal spatial light modulator

2000 ◽  
Vol 25 (14) ◽  
pp. 1013 ◽  
Author(s):  
Philip M. Birch ◽  
Rupert Young ◽  
David Budgett ◽  
Chris Chatwin
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
Computer Generated Hologram

Optimal trap velocity in a dynamic holographic optical trap using a nematic liquid crystal spatial light modulator

2022 ◽  
Author(s):  
Karuna Sindhu Malik ◽  
Bosanta Ranjan Boruah
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Spatial Light Modulator ◽  
Optical Trap ◽  
Optical Element ◽  
Optical Traps ◽  
Light Modulator ◽  
Step Size ◽  
Microscopic Object ◽  
Optimal Velocity

Abstract A dynamic holographic optical trap uses a dynamic diffractive optical element such as a liquid crystal spatial light modulator to realize one or more optical traps with independent controls. Such holographic optical traps provide a number of flexibilities and conveniences useful in various applications. One key requirement for such a trap is the ability to move the trapped microscopic object from one point to the other with the optimal velocity. In this paper we develop a nematic liquid crystal spatial light modulator based holographic optical trap and experimentally investigate the optimal velocity feasible for trapped beads of different sizes, in such a trap. Our results show that the achievable velocity of the trapped bead is a function of size of the bead, step size, interval between two steps and power carried by the laser beam. We observe that the refresh rate of a nematic liquid crystal spatial light modulator is sufficient to achieve an optimal velocity approaching the theoretical limit in the respective holographic trap for beads with radius larger than the wavelength of light.

A new class of spatial light modulator using a crosslinkable azobenzene nematic liquid crystal

2000 ◽  
Vol 11 (8-12) ◽  
pp. 579-582
Author(s):  
San-Seong Seomun ◽  
Takashi Fukuda ◽  
Hiro Matsuda ◽  
Hiroshi Miyachi ◽  
Masao Kato
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Spatial Light Modulator ◽  
Light Modulator ◽  
New Class

Diffraction efficiency analysis of a parallel-aligned nematic-liquid-crystal spatial light modulator

1994 ◽  
Vol 33 (14) ◽  
pp. 2804 ◽  
Author(s):  
Naohisa Mukohzaka ◽  
Narihiro Yoshida ◽  
Haruyoshi Toyoda ◽  
Yuji Kobayashi ◽  
Tsutomu Hara
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Diffraction Efficiency ◽  
Spatial Light Modulator ◽  
Efficiency Analysis ◽  
Light Modulator
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