Gupta, A., Jutas, R., Gollner, C., Pugzlys, A., Baltuska, A., & Fülöp, J. A. (2023). Broadband GaP Contact Grating Terahertz Source Pumped at 3.9 μm. In 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) (pp. 1–2). IEEE. https://doi.org/10.1109/IRMMW-THz57677.2023.10299250
A novel GaP semiconductor contact grating THz source with trapezoidal line profile, pumped at the mid-infrared wavelength of 3.9 μm, is demonstrated. The source can be scaled to high electric fields due to the plane-parallel geometry, the availability of good-quality large GaP crystals, and the large bandwidth of up to 6 THz.
