Publications [#357718] of Michael E. Gehm

Papers Published

1. Ng, W-R; Golish, DR; Xin, H; Gehm, ME, Direct rapid-prototyping fabrication of computer-generated volume holograms in the millimeter-wave and terahertz regime., Optics express, vol. 22 no. 3 (February, 2014), pp. 3349-3355 [doi]
   (last updated on 2024/12/31)

   Abstract:
   Computer-generated volume holograms (CGVHs) are gradient refractive index (GRIN) devices that consist of a superposition of multiple periodic diffraction gratings. Fabrication of these components for the visible range is difficult due to the small length-scale requirements but is more tenable in the terahertz (THz), as the length scales become more practical (≥ 10^-5 m). We successfully utilized polymer-based 3D additive rapid-prototyping technology to fabricate, to our knowledge, the world's first 3D THz CGVH in approximately 50 minutes, using $12 of consumables. This demonstration suggests that this technique could be extended to fabricate THz volumetric optics with arbitrary electromagnetic profiles.