Online Computer Generated Hologram Calculator*

Desired pattern

Hologram phase **

Hologram reconstruction

Select pattern

Upload your own input pattern
png file, image dimensions: up to 256 x 256, file size < 100 kb

Number of iterations

This calculator is based on the Gerchberg-Saxton phase-retrieval algorithm. The gray levels 0-255 in the hologram phase image corresponds to the 0-2π phase shifts.

* If you use this tool in your research or academic work please cite this page as:

S.D. Separa, A. Bañas, J. Glückstad (2017) Online Computer Generated Hologram Calculator. [online] Available at: [Accessed 21 Jan. 2019].

** Do you need a larger hologram? 3D Reconstructions? Do you want this fabricated or integrated into a compact device? Please contact us so we can explore exciting opportunities with you.

*** All copyrighted and trademarked images used in this page belong to their respective owners. They are included here for demonstration purposes only.