Digital holographic microscopes using two orthogonal polarized reference waves provides real-time polariscopes. Birefringence induced by internal stress is imaged in optical fibers and in fused silica substrates, where lines are written with low-energy femtosecond pulses.
Majed Chergui, Thomas Charles Henry Rossi, Malte Oppermann, Benjamin Bauer, Jérôme Lacour
Luc Thévenaz, Ana Gabriela Correa Mena, Xu Cheng