May 20, 2024
Our recent paper “Multi-bounce self-mixing in terahertz metasurface external-cavity lasers” has been highlighted as an Editor’s Pick in Optics Express! We investigated the effect of controlled optical feedback of a THz QC-VECSEL for the first time,...
Dec 11, 2023
Prof. Benjamin Williams, in collaboration with Aydin Babakhani, Subramanian Iyer in the UCLA ECE Department, and Mitchell Spearrin in the UCLA MAE Department, has been awarded a National Science Foundation Future of Semiconductors (FuSe) grant entitled: “FuSe:...
Jun 20, 2023
Perhaps the dominant source for single-frequency THz radiation below 1 THz is the Schottky diode frequency multiplier chain (FMC), in which the nonlinearity of a Schottky diode current-voltage relation is used to generate THz harmonics originating from microwave...
Jan 9, 2023
Our collaborators at JPL presented recent progress in our joint work towards the development of THz QC-VECSELs as stable, high-power, and frequency-agile local oscillators at the 32nd IEEE International Symposium on Space Terahertz Technology (ISSTT 2022), held in...
Jan 9, 2023
THz metasurface quantum-cascade VECSELs are emerging as broadly tunable single frequency sources of THz radiation in the 1.5-5 THz range, which can deliver output powers of milliwatts to tens of milliwatts, while exhibiting high-quality beam patterns. In this paper we...
Jan 7, 2023
The Terahertz and Infrared Photonics group will present several talks at SPIE Photonics West. Prof Williams will present an invited talk entitled: “Towards active mode locking in terahertz metasurface quantum-cascade lasers,” in the Ultrafast Phenomena and...
