A holographic method for generating axial cosinoidal structured light using spatial light modulator

2020 ◽  
Author(s):  
Xianlin Song ◽  
Jianshuang Wei ◽  
Lingfang Song
Keyword(s):  
Spatial Light Modulator ◽  
Structured Light ◽  
Holographic Method ◽  
Light Modulator

Robust Structured Light Pattern for Use with a Spatial Light Modulator in 3-D Endoscopy

2013 ◽  
Vol 7 (2) ◽  
pp. 105-121 ◽  
Author(s):  
Benjamin Mertens ◽  
Benjamin De Leener ◽  
Olivier Debeir ◽  
Charles Beumier ◽  
Pierre Lambert ◽  
...  
Keyword(s):  
Spatial Light Modulator ◽  
Structured Light ◽  
Light Modulator ◽  
Light Pattern

Digital Holographic Method to Characterize Spatial Light Modulator Devices

2010 ◽  
Author(s):  
Ricardo Amezquita ◽  
Oscar Rincon ◽  
Marcela Torres ◽  
Viviana Agudelo ◽  
Omar Olarte
Keyword(s):  
Spatial Light Modulator ◽  
Holographic Method ◽  
Light Modulator

scholarly journals Reconfigurable terahertz metasurfaces coherently controlled by wavelength-scale-structured light

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Kamalesh Jana ◽  
Emmanuel Okocha ◽  
Søren H. Møller ◽  
Yonghao Mi ◽  
Shawn Sederberg ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Spatial Light Modulator ◽  
Coherent Control ◽  
Structured Light ◽  
Electric Polarization ◽  
Light Modulator ◽  
Structured Materials ◽  
Optical Metamaterials ◽  
Wavelength Scale ◽  
Transfer Structure

Abstract Structuring light–matter interaction at a deeply subwavelength scale is fundamental to optical metamaterials and metasurfaces. Conventionally, the operation of a metasurface is determined by the collective electric polarization response of its lithographically defined structures. The inseparability of electric polarization and current density provides the opportunity to construct metasurfaces from current elements instead of nanostructures. Here, we realize metasurfaces using structured light rather than structured materials. Using coherent control, we transfer structure from light to transient currents in a semiconductor, which act as a source for terahertz radiation. A spatial light modulator is used to control the spatial structure of the currents and the resulting terahertz radiation with a resolution of 5.6 ± 0.8  μm $5.6\pm 0.8\mathrm{\,\mu m}$ , or approximately λ / 54 $\lambda /54$ at a frequency of 1 THz. The independence of the currents from any predefined structures and the maturity of spatial light modulator technology enable this metasurface to be reconfigured with unprecedented flexibility.

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