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Updated: Jun 5, 2026

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
Published on: December 5, 2025
Room temperature continuous wave milliwatt terahertz source
Maik Scheller1, Joe M Yarborough, Jerome V Moloney
1Desert Beam Technologies LLC, Tucson, AZ 85705, USA. maik.scheller@physik.uni-marburg.de
Abstract:
We present a continuous wave terahertz source based on intracavity difference frequency generation within a dual color vertical external cavity surface emitting laser. Using a nonlinear crystal with a surface emitting phase matching scheme allows for high conversion efficiencies. Due to the tunability of the dual mode spacing, the entire spectral range of the terahertz gap can be covered. The terahertz output scales quadratically with the intracavity intensity, potentially allowing for terahertz intensities in the range of 10s of milliwatts and beyond.
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