Roadmap of Terahertz Imaging 2021

Area of Science:

• Optics and Photonics
• Solid-State Physics
• Imaging Technology

Background:

• Terahertz (THz) imaging systems are advancing rapidly, with a focus on optimization and miniaturization.
• Current research aims to enhance functionality, reduce power consumption, and increase convenience for real-world applications.
• Solid-state components and on-chip integration are key to developing compact THz imaging systems.

Purpose of the Study:

• To provide a roadmap of recent advances in terahertz (THz) imaging as of 2021.
• To highlight the optimization and miniaturization of THz imaging systems.
• To discuss current challenges and future evolution in the field of THz imaging.

Main Methods:

• Review of advanced solid-state THz imaging systems, including room temperature sensors and arrays.
• Exploration of compact THz emission sources (optoelectronic and electrically driven).
• Discussion of advanced THz techniques: light-field imaging, holography, nano-imaging, computational imaging, AI in data processing.

Main Results:

• Progress in room-temperature THz sensors, arrays, and on-chip integration.
• Development of compact THz sources and their application in beam-forming.
• Integration of AI for enhanced THz data processing and optical development.
• Review of diverse THz imaging techniques including holography, nano-imaging, and spectroscopy.

Conclusions:

• Significant advancements in THz imaging systems, particularly in miniaturization and solid-state components.
• Emerging role of AI and computational methods in advancing THz imaging capabilities.
• Future outlook suggests continued evolution towards more practical and versatile THz imaging solutions.