Inscription and characterization of micro-structures in silicate, Foturan and tellurite glasses by femtosecond laser direct writing

K. C. Vishnubhatla; S. Venugopal Rao; R. Sai Santosh Kumar; K. Shiva Prasad; P. S. R. Prasad; D. Narayana Rao

doi:10.1117/12.762907

13 March 2008 Inscription and characterization of micro-structures in silicate, Foturan and tellurite glasses by femtosecond laser direct writing

K. C. Vishnubhatla, S. Venugopal Rao, R. Sai Santosh Kumar, K. Shiva Prasad, P. S. R. Prasad, D. Narayana Rao

Author Affiliations +

Proceedings Volume 6881, Commercial and Biomedical Applications of Ultrafast Lasers VIII; 688113 (2008) https://doi.org/10.1117/12.762907
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

We present some of our results on the femtosecond laser direct writing and characterization of micro-structures in silicate, Foturan^TM, and tellurite glasses. Structures with different sizes were fabricated with varying input energy and spatially modified pulse using a slit. Various characterization techniques including fluorescence spectroscopy, micro- Raman spectroscopy, and laser confocal microscopy were employed to analyze the structural and physical modifications at focal volume resulting in the change of refractive index (RI). The RI change due to material modification was estimated using diffraction from a continuous wave laser beam and is presented in this work. The results obtained are analyzed vis-a-vis the recent work in similar glasses and the applications of such structures in the fields of photonics.

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K. C. Vishnubhatla, S. Venugopal Rao, R. Sai Santosh Kumar, K. Shiva Prasad, P. S. R. Prasad, and D. Narayana Rao "Inscription and characterization of micro-structures in silicate, Foturan and tellurite glasses by femtosecond laser direct writing", Proc. SPIE 6881, Commercial and Biomedical Applications of Ultrafast Lasers VIII, 688113 (13 March 2008); https://doi.org/10.1117/12.762907

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