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Attenuated total reflection GeO2 hollow waveguide for 9.6–11.7 μm infrared light transmission

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5 Author(s)
Jing, Chengbin ; Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China ; Zhang, Chuanjian ; Li, Yi ; Shi, Yiwei
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We report the preparation and characterization of an attenuated total reflection (ATR) GeO2 hollow waveguide. An internally GeO2-coated silica glass tube (bore size 1.0–1.2 mm, length 1.2 m) was prepared using a homogeneous liquid phase deposition method. Kramers-Kronig analysis reveals that the GeO2 cladding material qualifies as a reflective layer (nr < 1) for the ATR hollow waveguide structure. ATR-transmission of 9.6–11.7 μm light through HE11 mode is confirmed by loss spectrum analysis of the sample. The straight and bending (30°) transmission losses for delivery of a ∼40 W CO2 laser beam (10.6 μm) are 0.56 dB/m and 1.64 dB/m, respectively.

Published in:

Applied Physics Letters  (Volume:99 ,  Issue: 16 )

Date of Publication:

Oct 2011

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