학술논문
Compact 3–8 μm supercontinuum generation in a low-loss As_2Se_3 step-index fiber
Document Type
Article
Author
Source
Optics Letters; October 2016, Vol. 41 Issue: 20 p4605-4608, 4p
Subject
Language
ISSN
01469592; 15394794
Abstract
A mid-infrared supercontinuum source spanning from 3 to 8 μm is demonstrated using a low-loss As_2Se_3 commercial step-index fiber. A maximum average output power of 1.5 mW is obtained at a low repetition rate of 2 kHz. Thanks to the low NA step-index fiber, the output is single mode for wavelengths above ∼5 μm. The pump source consists of an erbium-doped ZrF_4-based in-amplifier supercontinuum source spanning from 3 to 4.2 μm. The effects of both the pump power and As_2Se_3 fiber length on the output characteristics are studied. To the best of our knowledge, this is the first compact supercontinuum source ever reported to reach 8 μm in a standard step-index fiber.