When a beam of light is injected into the phase modulator, the desired intensity distribution is generated after diffraction. Because the phase distribution is calculated by a computer, this phase distribution pattern is called a computer generated hologram (CGH). Imposing such a desired intensity distribution on light by using CGH technology is called beam shaping.
What are the features and benefits of JDC’s LCoS-SLM?
What are the applications of beam shaping?
How is LCoS-SLM technology used in beam shaping?
Jasper Display Corporation (JDC) has developed LCOS microdisplays for phase only modulation technology applications, using its small pixel based backplanes. JDC’s LCOS microdisplays have the advantage of precisely controlled multi-level phase modulation (our unique modulation method allows at least 4096 (12bits) RMS voltage levels).
Applications of beam shaping include laser/material processing, laser/material interaction studies, laser weapons, optical data image processing, lithography, printing, bio-medical, optical tweezers, and laser art patterns, etc.
A Liquid crystal on silicon – Spatial light modulator (LCoS-SLM) can redistribute the irradiance and phase of a beam of light. There are two modulation methods on SLM technology. One is amplitude modulation, which is the controlled modulation of the intensity of the light beam. A second method is phase modulation , which is the controlled modulation of the phase of the light beam. Phase modulation technologies are widely used on LCoS-SLM to generate the diffraction and interference phenomena of light in a highly efficient manner.