Wide field of view common-path lateral-shearing digital holographic interference microscope

Area of Science:

• * Biophysics and quantitative imaging
• * Cell biology and morphology analysis
• * Optical microscopy and instrumentation

Background:

• * Quantitative 3-D imaging of living cells is crucial for understanding cell morphology and dynamics.
• * Digital holographic microscopy offers robust 3-D imaging capabilities for micro-objects.
• * Existing digital holographic microscope designs present trade-offs between temporal stability and field of view.

Purpose of the Study:

• * To develop a novel common-path digital holographic microscope.
• * To achieve high temporal stability and a wide field of view in a compact setup.
• * To enable quantitative analysis of cell morphology and dynamics.

Main Methods:

• * Development of a common-path digital holographic microscope utilizing a shearing plate and a pin-hole.
• * Implementation of a setup that is compact yet provides a wide field of view.
• * Testing and validation using quantitative imaging of human erythrocytes.

Main Results:

• * The developed microscope achieves high temporal stability, comparable to common-path designs.
• * The setup offers a field of view as wide as that of two-beam microscopes.
• * Successful imaging and quantification of human erythrocyte morphology and dynamics were demonstrated.

Conclusions:

• * The novel common-path digital holographic microscope effectively overcomes limitations of existing designs.
• * The system provides a powerful tool for high-resolution, stable 3-D imaging of living cells.
• * This advancement facilitates detailed studies of cell morphology and dynamic processes.