Asymmetric orientational writing dependence on polarization and direction in Li2O-Nb2O5-SiO2 glass with femtosecond laser irradiation

作者：Fan, Chaxing; Poumellec, Bertrand^*; Desmarchelier, Rudy; Zeng, Huidan; Bourguignon, Bernard; Chen, Guorong; Lancry, Matthieu

来源：Applied Physics B: Lasers and Optics , 2014, 117(2): 737-747.

DOI：10.1007/s00340-014-5889-8

• SILICA-BASED GLASSES
• FICTIVE TEMPERATURE
• FORM BIREFRINGENCE
• NANOSTRUCTURES
• THRESHOLDS
• STRESS
• PULSES

Strong birefringence photo-induced by the femtosecond laser irradiation and a sensitivity to the orientation of the laser movement versus the laboratory reference (i.e., difference between rightward and leftward or between upward and downward) have been demonstrated in 32.5Li(2)O-27.5Nb(2)O(5)-40SiO(2) glass. An asymmetry with the orientation of the laser scanning was firstly observed by one of the authors in 2003 in pure silica (Poumellec et al. in Opt Express 11:1070, 2003). Here, we show in addition that this asymmetric orientational sensitivity is dependent on the direction of laser polarization and the laser scanning (i.e., when the direction is horizontal or vertical). In particular, no asymmetric writing is detected when both laser scanning and polarization directions are vertical. These observations are not explained by the available model.

• 出版日期2014-11
• 单位华东理工大学