Terahertz-wave generation devices using electro-optic polymer slab waveguides and cyclo-olefin polymer clads

Area of Science:

• Optoelectronics
• Materials Science
• Photonics

Background:

• Terahertz (THz) wave generation is crucial for advanced spectroscopy and imaging.
• Existing THz devices often face limitations in efficiency, bandwidth, and compactness.
• Electro-optic (EO) polymers offer potential for high-performance THz applications due to their unique optical properties.

Purpose of the Study:

• To fabricate and demonstrate novel THz wave generation devices utilizing EO polymer slab waveguides.
• To evaluate the THz wave generation properties of these newly developed devices.
• To explore the potential of EO polymers for compact, efficient, and ultrabroadband THz technology.

Main Methods:

• Fabrication of EO polymer slab waveguides with cyclo-olefin polymer (COP) clads using a novel bonding procedure.
• Poling of the EO polymer layer to impart desired optical properties.
• Demonstration of THz wave generation using a 1.55 µm-band femtosecond fiber laser.
• Evaluation of the THz wave generation characteristics of the fabricated devices.

Main Results:

• Successful fabrication of EO polymer slab waveguide devices with COP clads, exhibiting low THz absorption loss.
• Demonstrated efficient THz wave generation from the fabricated EO polymer devices.
• Characterization of the THz wave generation properties, confirming device performance.

Conclusions:

• The novel fabrication procedure enables the creation of high-performance THz devices using EO polymers.
• The developed EO polymer slab waveguide devices are capable of efficient THz wave generation.
• These findings pave the way for the development of compact, highly efficient, and ultrabroadband THz devices.