Non-degenerate wavelength computational ghost imaging with thermal light

Area of Science:

• Quantum optics
• Computational imaging
• Photonics

Background:

• Ghost imaging traditionally requires specific wavelength conditions.
• Previous methods often relied on short wavelengths, limiting performance in certain environments.

Purpose of the Study:

• To investigate non-degenerate wavelength computational ghost imaging with a thermal light source.
• To explore the impact of wavelength differences on image quality and resolution.
• To assess performance under atmospheric turbulence.

Main Methods:

• Theoretical modeling of non-degenerate wavelength ghost imaging.
• Experimental implementation using a thermal light source.
• Acquisition and analysis of computational ghost images.

Main Results:

• High-quality computational ghost images were obtained when computed and detected light wavelengths differed.
• Longer wavelengths demonstrated superior spatial resolution compared to short wavelengths.
• The technique showed robustness in strong atmospheric turbulence.

Conclusions:

• Non-degenerate wavelength computational ghost imaging is a viable technique.
• Utilizing longer wavelengths offers enhanced spatial resolution and improved performance in turbulent conditions.