Transmission characteristics of T-ray multilayer interference filters

W. Withayachumnankul; B. M. Fischer; S. P. Mickan; D. Abbott

doi:10.1117/12.758811

8 January 2008 Transmission characteristics of T-ray multilayer interference filters

W. Withayachumnankul, B. M. Fischer, S. P. Mickan, D. Abbott

Proceedings Volume 6801, Photonics: Design, Technology, and Packaging III; 68011G (2008) https://doi.org/10.1117/12.758811
Event: SPIE Microelectronics, MEMS, and Nanotechnology, 2007, Canberra, ACT, Australia

Abstract

An optical multilayer interference filter is made from two or more different dielectric materials layered in such a way that it promotes constructive or destructive wave interference for a selected frequency in the direction normal to the layers. Usually, each layer has the thickness of a quarter of wavelength at which the stop-band is required. In this paper, a quarter-wavelength multilayer interference filter is realised for T-ray applications. The dielectric materials used are high-resistivity silicon and free space, both of which have high transparency to T-rays and flat all-pass responses over the frequencies of interest. The designed thickness of both materials is in the order of a hundred microns, and thus allows the novelty of a retrofittable assembled structure. An analysis of the affect of the number of layers on the spectral response is given for the first time. The THz-TDS measurement of the fabricated structure is demonstrated to be in agreement with theory.

Citation Download Citation

W. Withayachumnankul, B. M. Fischer, S. P. Mickan, and D. Abbott "Transmission characteristics of T-ray multilayer interference filters", Proc. SPIE 6801, Photonics: Design, Technology, and Packaging III, 68011G (8 January 2008); https://doi.org/10.1117/12.758811

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