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Related Experiment Video

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A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Programmable two-dimensional optical fractional Fourier processor.

José A Rodrigo¹, Tatiana Alieva, María L Calvo

¹Facultad de Ciencias Físicas,Universidad Complutense de Madrid, Madrid, Spain.jarmar@fis.ucm.es

|April 1, 2009

Summary

A novel optical system performs the fractional Fourier transform (FRFT) in real time without extra scaling or phase factors. This flexible setup enables rapid algorithm implementation for optical information processing and beam characterization.

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Area of Science:

Optics and Photonics
Information Processing

Background:

The fractional Fourier transform (FRFT) is a powerful tool in optical signal processing.
Existing optical FRFT setups often introduce undesirable scaling and phase factors, complicating applications.

Purpose of the Study:

To present a flexible optical system for real-time FRFT.
To achieve FRFT without additional scaling and phase factors dependent on fractional orders.

Main Methods:

Development of a flexible optical system capable of performing FRFT.
Experimental demonstration of the system's feasibility across a wide range of fractional orders.

Main Results:

The proposed optical system performs FRFT with high flexibility and near real-time capability.
The system successfully avoids additional scaling and phase factors, a significant improvement over existing methods.
Experimental validation confirms the system's performance for diverse fractional orders.

Conclusions:

The developed optical system offers a practical and efficient solution for real-time FRFT.
Its ability to rapidly adjust fractional orders opens new possibilities for advanced optical algorithms.
Applications include beam characterization, phase retrieval, and complex information processing.