Spatially incoherent off-axis Fourier holography without using spatial light modulator (SLM)

Area of Science:

• Optics and Photonics
• Holography
• Image Reconstruction

Background:

• Fourier holographic systems are crucial for imaging applications.
• Fourier Incoherent Single Channel Holography (FISCH) is a known technique but has limitations.
• Existing systems often require complex setups and have reduced light throughput.

Purpose of the Study:

• To introduce a novel spatially incoherent dual path Fourier holographic system.
• To demonstrate advantages over existing FISCH systems.
• To showcase the system's applicability for both on-axis and off-axis samples.

Main Methods:

• A spatially incoherent dual path Fourier holographic system was designed and implemented.
• The system eliminates the need for a Spatial Light Modulator (SLM).
• Mirror tilting was used to enable on-axis sample imaging.

Main Results:

• The developed incoherent off-axis Fourier holographic (IOFH) system demonstrates simplicity and cost-effectiveness.
• The system achieves high light throughput by avoiding SLM and analyzer use.
• Successful holographic reconstruction was achieved for both on-axis and half-plane sample configurations.

Conclusions:

• The new IOFH system offers a practical and efficient alternative to current holographic techniques.
• The absence of an SLM and high light throughput make it suitable for various applications.
• The system's flexibility in handling on-axis and off-axis samples broadens its potential uses in optical imaging.