THz white light cavity with nonlinear dispersion in graphene

Area of Science:

• Physics
• Materials Science
• Optics

Background:

• Terahertz (THz) technology requires broadband response for advanced applications.
• Graphene's unique properties offer potential for novel optical devices.
• Controlling nonlinear dispersion is key to enhancing optical cavity performance.

Purpose of the Study:

• To propose and investigate a white light cavity (WLC) scheme for broadband terahertz (THz) response.
• To enhance nonlinear dispersion in a magnetized graphene system for improved cavity performance.
• To analyze the factors influencing cavity linewidth and transmission.

Main Methods:

• Utilizing a white light cavity (WLC) scheme.
• Employing a magnetized graphene system to enhance nonlinear dispersion.
• Investigating the weak probe field limit and Autler-Towns splitting conditions.
• Performing simulations to determine cavity response range and linewidth.

Main Results:

• Achieved broadband response in the terahertz (THz) region.
• Demonstrated significant broadening of the cavity linewidth (nearly 11 times larger than empty cavity).
• Observed enhanced nonlinear dispersion leading to improved cavity transmission and response.

Conclusions:

• The proposed WLC scheme effectively broadens the cavity linewidth in the THz region.
• Magnetized graphene and enhanced nonlinear dispersion are crucial for achieving broadband THz response.
• This approach offers a promising pathway for developing advanced THz devices.