Structure-terahertz property relationship and femtosecond laser irradiation effects in chalcogenide glasses

Published

November 12, 2022

Author(s)

Nicholas Tostanoski, Edwin J. Heilweil, Peter Wachtel, David Musgraves, S. K. Sundaram

Abstract

We report structure-terahertz property relationship for various non-oxide chalcogenide glasses including unary (vitreous selenium (Se)), binary (arsenic sulfide (As-S), arsenic selenide (As-Se), and germanium selenide (Ge-Se)), and ternary (germanium arsenic selenide (Ge-As-Se)), systems along with commercially available AMTIR-1, IRG 22, and IRG 24 Ge-As-Se glasses. This comprehensive study is the first of its kind to combine Raman spectroscopy to examine structural units, connectivity, and glass network and terahertz time-domain spectroscopy (THz-TDS) to record the THz refractive index, n(THz), across a broad THz bandwidth. THz-TDS was carried out at Alfred University (AU) and National Institute of Standards and Technology (NIST), ultimately providing confidence in n(THz) values measured at AU. Low-repetition rate femtosecond laser irradiation (1 KHz, 40 fs, and 70 mW) was used to modify As-S and As-Se glass systems, where Raman and THz-TDS were used to observe structural and n(THz) changes. Long-wave infrared (LWIR) (e.g., 10 μm)-THz (e.g., 1.0 THz) refractive index correlation is presented for all binary and ternary studied chalcogenide glasses. Such a correlation is valuable for predicting and designing chalcogenide glasses for integrated optical applications across THz and IR regions.

Citation

Journal of Non-Crystalline Solids

Volume

600

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.jnoncrysol.2022.122020

Local Download

Keywords

Chalcogenide Glasses, Structure-Property Relationship, Raman Spectroscopy, Terahertz Time-Domain Spectroscopy, Femtosecond Laser Irradiation

Citation

Tostanoski, N. , Heilweil, E. , Wachtel, P. , Musgraves, D. and Sundaram, S. (2022), Structure-terahertz property relationship and femtosecond laser irradiation effects in chalcogenide glasses, Journal of Non-Crystalline Solids, [online], https://doi.org/10.1016/j.jnoncrysol.2022.122020, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935277 (Accessed October 11, 2025)