Nanoindentation studies on waveguides inscribed in chalcogenide glasses using ultrafast laser
| Autor: | Tamilarasan Sabapathy, Mangalampalli S. R. N. Kiran, Upadrasta Ramamurty, Sundarrajan Asokan, Ajoy K. Kar, Arunbabu Ayiriveetil |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Waveguide (electromagnetism)
Materials science business.industry Chalcogenide Physics::Optics Materials Engineering (formerly Metallurgy) Nanoindentation Laser Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Optics chemistry law Fiber laser Instrumentation Appiled Physics business Ultrashort pulse Refractive index Elastic modulus |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 |
| Popis: | Optical straight waveguides are inscribed in GeGaS and GeGaSSb glasses using a high repetition-rate sub-picosecond laser. The mechanical properties of the glasses in the inscribed regions, which have undergone photo induced changes, have been evaluated by using the nano-indentation technique. Results show that the hardness and elastic modulus of the photo-modified glasses are significantly lower as compared to the other locations in the waveguide, which tend to be similar to those of the unexposed areas. The observed mechanical effects are found to correlate well with the optical properties of the waveguides. Further, based on the results, the minimum threshold values of hardness and elastic modulus for the particular propagation mode of the waveguide (single or multi), has been established. |
| Databáze: | OpenAIRE |
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