Writing of permanent birefringent microlayers in bulk fused silica with femtosecond laser pulses

摘要

The possibility of writing permanent birefringent structures with controllable microscopic dimensions in fused silica platelets was demonstrated. Imprinting was made using a regeneratively amplified Ti:sapphire laser delivering pulses femtosecond pulses of 4 μJ maximum energy per pulse. The birefringence properties of the transmission gratings and of a quasi-uniform laser was established.