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Related Experiment Video

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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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Published on: October 11, 2016

Lateral shearing interferometer based on two Ronchi phase gratings in series.

H Schreiber¹, J Schwider

¹Lehrstuhl für Optik, Staudtstr. 7/B2, D-91058 Erlangen, Germany.

|August 1, 1997

Summary

A novel lateral shearing interferometer uses two Ronchi phase gratings for adjustable shear and phase shifting. This simple design is ideal for optical testing, particularly in the near-infrared spectrum.

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Area of Science:

Optics and Optical Testing

Background:

Shearing interferometers are widely used in optical testing.
Existing designs can be complex or limited in adjustability.

Purpose of the Study:

To introduce a new, simpler lateral shearing interferometer design.
To enable adjustable shear and phase shifting for enhanced optical testing capabilities.

Main Methods:

Utilized two Ronchi phase gratings in series to generate lateral shear.
Achieved phase shifting through lateral movement of one grating relative to the other.
Adjusted shear amount by varying the distance between the gratings.

Main Results:

Demonstrated a functional lateral shearing interferometer with easily adjustable parameters.
The device's simplicity makes it particularly suitable for near-infrared applications.
The design offers a straightforward approach to lateral shear generation and control.

Conclusions:

The proposed Ronchi grating-based lateral shearing interferometer offers a simple and versatile solution for optical testing.
Its adjustability and simplicity are key advantages, especially for near-infrared applications.