[P-CTu17] C17. Optical Sensors and Systems

[P-CTu17-13] Reflected-Phase Measurement of Azimuth-Rotated Guided-Mode Resonance Device Using Pohl Interferometer

Cheng-Tsung Chang¹, *Jaturon Tongpakpanang¹, Wen-Kai Kuo¹ (1. National Formosa University (Taiwan))

[Presentation Style] Online

In this paper, we report the reflected-phase measurement results of the GMR device using the Pohl interferometer. Fringe shifts of the interferogram caused by the abrupt phase change of the resonantly reflected beam were observed by rotating the azimuth angle of the GMR device and without altering the reflected interference beam position, and the fringe shift can be captured and calculated by a fixed position camera.