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Related Experiment Video

Updated: Feb 4, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Spatial and spectral imaging of point-spread functions using a spatial light modulator.

Sravan Munagavalasa1,2, Bryce Schroeder1,3, Xuanwen Hua1

  • 1Department of Biomedical Engineering, Stony Brook University, State University of New York, Stony Brook, NY 11794, United States.

Optics Communications
|October 16, 2018
PubMed
Summary

We engineered a point-spread function (PSF) to capture molecular emission

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Area of Science:

  • Optical microscopy
  • Spectroscopy
  • Biophysics

Background:

  • Accurate spatial and spectral information is crucial for molecular imaging.
  • Existing methods face challenges in simultaneously resolving these properties.

Purpose of the Study:

  • To develop a novel point-spread function (PSF) engineering technique.
  • To enable simultaneous imaging of spatial and spectral information of molecular emissions.

Main Methods:

  • Utilized a spatial light modulator (SLM) for PSF engineering.
  • Imposed a dispersive grating pattern on emissions to encode spectral data.
  • Developed a deconvolution model for separating spectral and spatial information.

Main Results:

  • Demonstrated successful encoding of spectral information via grating patterns.
  • Validated a deconvolution model for decoupling spatial and spectral data.
  • Achieved simultaneous 3D spatial and spectral imaging of molecular emissions.

Conclusions:

  • The developed PSF engineering approach effectively captures spatial and spectral data.
  • This technique is applicable to advanced molecular imaging, including single-molecule studies and fluorescence microscopy.