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...
Dec 7, 2021
Recent results published with our collaborators show that moving to thinner active regions in THz QC-lasers result in improved thermal properties and higher operating temperatures in continuous-wave mode. Because of the effect of heterostructure interfaces, the...
