Fibonacci terahertz imaging by silicon diffractive optics

Domas Jokubauskis; Gediminas Ra\v{c}iukaitis; Gintaras Valu\v{s}is; Irmantas Ka\v{s}alynas; Linas Minkevi\v{c}ius; Mindaugas Karali\=unas; Simonas Indri\v{s}i\=unas

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Fibonacci terahertz imaging by silicon diffractive optics

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arxiv 2010.03333 v1 pith:7V7ABYQ4 submitted 2020-10-07 physics.optics

Fibonacci terahertz imaging by silicon diffractive optics

Domas Jokubauskis , Linas Minkevi\v{c}ius , Mindaugas Karali\=unas , Simonas Indri\v{s}i\=unas , Irmantas Ka\v{s}alynas , Gediminas Ra\v{c}iukaitis , Gintaras Valu\v{s}is This is my paper

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keywords fibonacciimagingsilicondiffractivefrequencyplatespatialterahertz

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Fibonacci or bifocal terahertz (THz) imaging is demonstrated experimentally employing silicon diffractive zone plate (SDZP) in a continuous wave mode. Images simultaneously recorded in two different planes are exhibited at 0.6 THz frequency with the spatial resolution of wavelength. Multi-focus imaging operation of the Fibonacci lens is compared with a performance of the conventional silicon phase zone plate. Spatial profiles and focal depth features are discussed varying the frequency from 0.3 THz to 0.6 THz. Good agreement between experimental results and simulation data is revealed.

Fibonacci terahertz imaging by silicon diffractive optics

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