Fibonacci subterahertz imaging: features and applications

Domas Jokubauskis; Linas Minkevičius; Mindaugas Karaliūnas; Irmantas Kašalynas; Simonas Indrišiūnas; Gediminas Račiukaitis; Gintaras Valušis

doi:10.1117/12.2529012

6 September 2019 Fibonacci subterahertz imaging: features and applications

Domas Jokubauskis, Linas Minkevičius, Mindaugas Karaliūnas, Irmantas Kašalynas, Simonas Indrišiūnas, Gediminas Račiukaitis, Gintaras Valušis

Author Affiliations +

Proceedings Volume 11124, Terahertz Emitters, Receivers, and Applications X; 111240X (2019) https://doi.org/10.1117/12.2529012
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

Fibonacci or bifocal terahertz (THz) imaging based on silicon diffractive zone plate in a continuous wave mode at 0.6 THz is demonstrated. Silicon as a low absorbing material was used in the laser ablation process to fabricate the Fibonacci structures. Zone plates were designed by the three-dimensional finite-difference time-domain method. To illustrate the Fibonacci focusing, the performance was studied both theoretically and experimentally by determining spatial profiles, the distance between the foci and the focal depth at frequencies of 0.3 THz and 0.6 THz. Terahertz images of various packaged objects at the 0.6 THz frequency were simultaneously recorded with the spatial resolution of wavelength in two different planes separated by 7 mm distance. Imaging performance using the Fibonacci lens is compared with the operation of the conventional silicon phase zone plate.

Conference Presentation

Citation Download Citation

Domas Jokubauskis, Linas Minkevičius, Mindaugas Karaliūnas, Irmantas Kašalynas, Simonas Indrišiūnas, Gediminas Račiukaitis, and Gintaras Valušis "Fibonacci subterahertz imaging: features and applications", Proc. SPIE 11124, Terahertz Emitters, Receivers, and Applications X, 111240X (6 September 2019); https://doi.org/10.1117/12.2529012

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available