Controllable optical black hole in left-handed materials

Area of Science:

• Physics
• Materials Science
• Optics

Background:

• Controlling light propagation, especially halting and storing it, is a significant challenge in optics.
• Existing methods often require external control mechanisms, limiting practical applications.

Purpose of the Study:

• To theoretically predict a novel controllable optical black hole.
• To demonstrate a method for halting and storing light using a specific material configuration.

Main Methods:

• Theoretical modeling of light propagation in a planar left-handed material slab.
• Utilizing a criterion based on zero effective round-trip propagation length in a zigzag path.
• Performing ab initio simulations to validate theoretical predictions.

Main Results:

• A theoretical prediction of a controllable optical black hole was established.
• A criterion for achieving a complete standstill of light was identified (zero effective round-trip propagation length).
• Ab initio simulations confirmed flexible controllability for swallowing, holding, and releasing light, as well as controlling light speed.

Conclusions:

• The proposed optical black hole offers a new paradigm for light manipulation.
• This controllable system provides unprecedented flexibility in managing light's speed and storage.
• The findings pave the way for advanced optical devices and technologies.