Structural, mechanical and optical studies on ultrafast laser inscribed chalcogenide glass waveguide
| Autor: | G. Sreevidya Varma, Arunbabu Ayiriveetil, Sundarrajan Asokan, Upadrasta Ramamurty, Tamilarasan Sabapathy, Abhishek Chaturvedi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Chalcogenide glass 02 engineering and technology 01 natural sciences law.invention 010309 optics Inorganic Chemistry symbols.namesake Optics law 0103 physical sciences Instrumentation Appiled Physics Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectroscopy Elastic modulus business.industry Organic Chemistry Materials Engineering (formerly Metallurgy) Nanoindentation 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials symbols Optoelectronics 0210 nano-technology business Raman spectroscopy Waveguide Ultrashort pulse |
| Zdroj: | Optical Materials. 66:386-391 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2017.02.030 |
| Popis: | Multi-scan waveguides have been inscribed in GeS2 glass sample with different pulse energies and translation speeds. Mechanical and structural changes on GeS2 binary glass in response to irradiation to 1047 nm femto-second laser pulses have been investigated. The optical characterization of these waveguides has been done at 1550 nm of laser wavelength and the material response to laser exposure is characterized by both nanoindentation studies and micro-Raman spectroscopy. Nanoindentation investigations show a decrease in hardness (H) and elastic modulus (E) upon laser irradiation. The change in E and H are found to be varying with the translational speed, pulse energy and hence the net-fluence at the sample. These changes are correlated with variations in the Raman response of photo-exposed glass which is interpreted in terms of structural modifications made by the laser inscriptions to the glassy network. The mechanical behavior and local structural changes on waveguide writing is found to be dependent on net-fluence and it is correlated with the preparation conditions like melt temperature and cooling rate. (C) 2017 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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