کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1497079 | 992984 | 2007 | 9 صفحه PDF | دانلود رایگان |

We report results of a systematic study to evaluate for the first time, the relationship between compositional variation and photo-sensitivity of new glasses in the Ge–Sb–S/Se system with varying ratios of chalcogen (S/Se), upon IR femstosecond laser exposure. It is shown that the photo-sensitivity of the glass depends on the glass composition and that IR femtosecond laser irradiation in this system results in near-surface photo-expansion. Glass structure modification as a function of S/Se ratio and the influence of laser dose has been characterized using micro-Raman spectroscopy and is correlated to the resulting photo-expansion. As compared to other widely studied binary chalcogenide glass systems, photo-expansion was found to vary with the Se content. Such modification opens the pathway towards the laser writing of photonic devices in the surface of the material.
Journal: Optical Materials - Volume 29, Issue 8, April 2007, Pages 1075–1083