Unveiling sub-bandgap energy-level structures on machined optical surfaces based on weak photo-luminescence
Dinghuai Yang,
Linjie Zhao,
Jian Cheng
et al.
Abstract:Sub-bandgap defect energy levels (SDELs) introduced by the point defects located in surface-defect areas are considered the main factors in decreasing the laser-induced damage thresholds (LIDTs). The suppression of the...
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