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Highly angle-tolerant spectral filter based on an etalon resonator incorporating a high index cavity

Noh, Tae-Hu; Yoon, Yeo-Taek; Lee, Sang-Shin; Choi, Duk-Yong; Lim, Seung-Chan

Description

A high angular tolerance spectral filter was realized incorporating an etalon, which consists of a TIO2 cavity sandwiched between a pair of Ag/Ge mirrors. The effective angle was substantially extended thanks to the cavity's high refractive index. The device was created by embedding a 313-nm thick TIO2 film in 16-nm thick Ag/Ge films through sputtering, with the Ge layer alleviating the roughness and adhesion of the Ag layer. For normal incidence, the observed center wavelength and transmission...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/68538
Source: Journal of the Optical Society of Korea
DOI: 10.3807/JOSK.2012.16.3.299

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