THz frequency, Goniometric scanning system for human cornea using off-axis parabolic mirrors

Conference paper (2021)

Authors

Yong Hu UCLA
Mariangela Baggio Aalto University
Aleksi Tamminen Aalto University
Juha Ala-laurinaho Aalto University
Elliott Brown Wright State University
Shahab Oddin Dabironezare Tera-Hertz Sensing - EEMCS
Nuria Llombart Tera-Hertz Sensing - EEMCS
Vincent Wallace University of Western Australia
Zachary D. Taylor Aalto University
Research Group
Tera-Hertz Sensing (EEMCS) (TU Delft)
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Published Date

2021

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Tera-Hertz Sensing

Abstract

An efficient method for rapid, non-contact scanning of human cornea is presented. The optics utilize two, 101.6-mm diameter off-axis parabolic mirrors fed by a goniometrically scanned, planar mirror. An evaluation system at 650 GHz was built and demonstrated ~ 1.5 mm beam radius on target and ~ 30
o x 30
o field of view. The system was inspired by confocal laser scanning principles and represents a system design where image acquisition time is limited by SNR, not mechanical translation.