Efficient wave propagation for terahertz imaging and sensing

Details Efficient wave propagation for terahertz imaging and sensing Efficient wave propagation for terahertz imaging and sensing

2006-01-31

2006-01-31

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C359S900000, C359S566000, C359S565000

Reexamination Certificate

active

06992824

ABSTRACT:
A method of wave propagation from 100–10000 GHz. The currently disclosed method and apparatus adapts micro-opto-electro-mechanical systems (MOEMS) technologies and processes to construct Kinoform optical components from microwave to terahertz range. The method uses induced coupled plasma (ICP) and gray scale processes for upper terahertz band; LIGA-based high aspect ratio (HAR) and gray scale processes are for the mid band; and computer numerical control (CNC) for lower band. In all cases, the thickness of any processed components is about the respective wavelength and system efficiency is about 95%. A Kinoform lens element is designed at 5000 GHz. However, the method is applicable for the entire terahertz band.

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