☆ 3.8 Proceedings Paper

Integration of a 2.1-THz Quantum Cascade Laser within an IEEE WM-130 Rectangular Metallic Waveguide

2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ (2023)

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Article Engineering, Electrical & Electronic

Waveguide integration of a > 4.7-THz quantum-cascade laser

Eleanor Nuttall et al.

Summary: Waveguide integration of terahertz quantum cascade lasers (THz QCLs) is achieved above 4.7 THz frequencies. A fabrication method involving precision micromachining, diamond-turning, and electroless-plating is utilized to manufacture hollow rectangular waveguides with diagonal feedhorns integrated. The surface roughness at the level of approximately 1 μm is attained, allowing radiation outcoupling in the 4.75-5.05 THz band with a divergence angle less than 5 degrees along the QCLs substrate plane.

ELECTRONICS LETTERS (2023)

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Article Engineering, Electrical & Electronic