Third-Order Nonlinearity In Ge-Sb-Se Glasses At Mid-Infrared Wavelengths

Keywords

Chalcogenide; Glass; Nonlinear optics; Optical materials

Abstract

The optical properties of Ge-Sb-Se glasses have been extensively studied at telecom wavelengths in recent years. However, the understanding of nonlinearity in Ge-Sb-Se glasses at mid-infrared wavelengths still remains limited. In this work, a series of Ge20SbxSe80-x (x = 0, 5, 10) glasses were prepared by conventional melt-quenching method. The absorption spectra and the refractive index of glasses were recorded. The third order nonlinearity, n2, and nonlinear absorption coefficient were measured for Ge-Sb-Se glass samples at the wavelengths of 1550, 2000 and 2500 nm by Z-scan technique, respectively. With the increasing of Sb contents, the linear refractive index of glass increased. Among the three operating wavelengths, all the three glass samples have a highest n2 at 2000 nm. By using the figure of merit (FOM) to evaluate the studied three glasses, the Ge20Sb10Se70 glass shows the greatest potential for mid-IR all optical switching devices.

Publication Date

10-1-2015

Publication Title

Materials Research Bulletin

Volume

70

Number of Pages

204-208

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.materresbull.2015.04.048

Socpus ID

84928537146 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84928537146

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