High-speed phase-shifting common-path quantitative phase imaging with a piezoelectric actuator

Séverine Coquoz, Amir Nahas, Miguel Sison, Antonio Lopez, Theo Lasser
2016 Journal of Biomedical Optics  
We present a phase-shifting quantitative phase imaging technique providing high temporal and spatial phase stability and high acquisition speed. A piezoelectric microfabricated phase modulator allows tunable modulation frequencies up to the kHz range. After assessing the quantitative phase accuracy with technical samples, we demonstrate the high acquisition rate while monitoring cellular processes at temporal scales ranging from milliseconds to hours.
doi:10.1117/1.jbo.21.12.126019 pmid:28009028 fatcat:2m5sdxt7cjezbaa54j6m4azyc4