Photosensitivity study of GeS2 chalcogenide glass under femtosecond laser pulses irradiation

Arunbabu Ayiriveetil; Tamilarasan Sabapathy; Ajoy K. Kar; Sundarrajan Asokan

doi:10.1117/12.2189653

17 July 2015 Photosensitivity study of GeS₂ chalcogenide glass under femtosecond laser pulses irradiation

Arunbabu Ayiriveetil, Tamilarasan Sabapathy, Ajoy K. Kar, Sundarrajan Asokan

Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95242B (2015) https://doi.org/10.1117/12.2189653
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

The present study discusses the photosensitivity of GeS2 chalcogenide glass in response to irradiation with femtosecond pulses at 1047 nm. Bulk GeS₂ glasses are prepared by conventional melt quenching technique and the amorphous nature of the glass is confirmed using X-ray diffraction. Ultrafast laser inscription technique is used to fabricate the straight channel waveguides in the glass. Single scan and multi scan waveguides are inscribed in GeS₂ glasses of length 0.65 cm using a master oscillator power amplifier Yb doped fiber laser (IMRA μjewel D400) with different pulse energy and translation speed. Diameters of the inscribed waveguides are measured and its dependence on the inscription parameters such as translation speed and pulse energy is studied. Butt coupling method is used to characterize the loss measurement of the inscribed optical waveguides. The mode field image of the waveguides is captured using CCD camera and compared with the mode field image of a standard SMF-28 fibers.

Citation Download Citation

Arunbabu Ayiriveetil, Tamilarasan Sabapathy, Ajoy K. Kar, and Sundarrajan Asokan "Photosensitivity study of GeS₂ chalcogenide glass under femtosecond laser pulses irradiation", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95242B (17 July 2015); https://doi.org/10.1117/12.2189653

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