22–27 Jun 2025
Couvent des Jacobins
Europe/Paris timezone

PB-31 Design and Measurement of a 265 GHz Sub-terahertz Optical System for Exposure Experiments Using a Gyrotron

24 Jun 2025, 11:00
1h 30m
Halle 1 (Couvent des Jacobins)

Halle 1

Couvent des Jacobins

Speaker

Masafumi Fukunari

Description

This study presents the development of a sub-THz optical system for exposure experiments on corneal tissues at 265 GHz using a high-power gyrotron. The optical system includes phase-correcting mirrors, flat mirrors, an elliptical mirror, lenses, and a power control module. The target beam is designed to achieve a full width at half maximum (FWHM) of 4–6 mm and a vertical polarization direction at the sample position. Radiation patterns were measured using an infrared camera, and the FWHM of the beam was estimated to be 6.4 mm and 5.1 mm in horizontal and vertical directions, respectively. The results demonstrate that the beam size is useful for exposure experiments.

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