Simple and fast calculation algorithm for computer-generated hologram with wavefront recording plane.

Area of Science:

• Optics and Photonics
• Computational Imaging

Background:

• Computer-generated holograms (CGHs) are essential for holographic displays and optical systems.
• Conventional CGH calculation methods often involve high computational complexity, limiting their speed and efficiency.

Purpose of the Study:

• To introduce a novel, fast, and computationally efficient algorithm for CGH calculation.
• To reduce the computational load in generating CGHs by utilizing a wavefront recording plane.

Main Methods:

• The proposed method employs a wavefront recording plane positioned between object data and the CGH.
• By placing the plane close to the object, the light interacts with a smaller region, simplifying calculations.
• Diffraction calculations are performed from the wavefront recording plane to the final CGH.

Main Results:

• The algorithm achieves a significantly reduced computational complexity compared to traditional methods.
• The computational complexity for processing object light becomes very small.
• The diffraction calculation from the wavefront recording plane to the CGH has a constant computational complexity.

Conclusions:

• The developed algorithm offers a simple and fast approach to CGH calculation.
• This method dramatically reduces overall computational complexity, enabling more efficient hologram generation.
• The use of a wavefront recording plane is key to achieving computational efficiency in CGH synthesis.