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Photosensitivity study of GeS2 chalcogenide glass under femtosecond laser pulses irradiation

Ayiriveetil, Arunbabu and Sabapathy, Tamilarasan and Kar, Ajoy K and Asokan, Sundarrajan (2015) Photosensitivity study of GeS2 chalcogenide glass under femtosecond laser pulses irradiation. In: 3rd Conference of the Optics-and-Photonics-Society-of-Singapore / International Conference on Optical and Photonic Engineering (icOPEN), APR 14-16, 2015, Singapore, SINGAPORE.

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Official URL: http://dx.doi.org/10.1117/12.2189653


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 mu jewel 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.

Item Type: Conference Proceedings
Series.: Proceedings of SPIE
Additional Information: Copy right for this article belongs to the SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Keywords: Direct laser writing; chalcogenide glass; waveguides
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited: 11 Sep 2015 04:59
Last Modified: 11 Sep 2015 04:59
URI: http://eprints.iisc.ac.in/id/eprint/52338

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