Benjamin Williams

Benjamin Williams

Benjamin Williams
Primary Area: Physical and Wave Electronics

Office: 68-117 Engr. IV
Phone: (310) 825-6961
Research Lab: Terahertz Devices and Intersubband Nanostructures Laboratory

Research and Teaching Interests:

Terahertz and mid-infrared quantum cascade lasers and photonic devices, low-dimensional semiconductor materials and intersubband physics, terahertz and infrared plasmonics, waveguides, antennas

Awards and Recognitions
2016 Presidential Early Career Award for Scientists and Engineers (PECASE)
2012 National Science Foundation CAREER Award
2008 DARPA Young Faculty Award (YFA)
Selected Publications

• C. A. Curwen, J. L. Reno, and B. S. Williams, “Broadband continuous single-mode tuning of a short-cavity quantum-cascade VECSEL,” Nature Photonics, vol. 13, 855–859, September 23, 2019.
• C. A. Curwen, J. L. Reno, and B. S. Williams, “Terahertz Quantum Cascade VECSEL with Watt-Level Output Power,” Applied Physics Letters, vol. 113, 011104, July 2 2018.
• A. Pan, B. A. Burnett, C.-O. Chui, and B. S. Williams, “Density Matrix Modeling of Quantum Cascade Lasers without an Artificially Localized Basis: A Generalized Scattering Approach,” Phys. Review B, vol. 96, 085308, August 15, 2017.
• L. Xu, D. Chen, C. A. Curwen, M. Memarian, J. L. Reno, T. Itoh, and B. S. Williams, “Metasurface quantum-cascade laser with electrically switchable polarization,” Optica, vol. 4, 468-475 (2017).
• L. Xu, P. W. C. Hon, C. Curwen, Q.-S. Chen, T. Itoh, and B. S. Williams, “Metasurface external cavity laser,” Applied Physics Letters, vol 107, 221105, 2015
• B. A. Burnett and B. S. Williams, “Density matrix model for polarons in a terahertz quantum dot cascade laser,” Phys. Rev. B, vol 90, 155309, 2014.
• A. A. Tavallaee, P. W. C. Hon, Q.-S. Chen, T. Itoh, and B. S. Williams, “Active terahertz quantum-cascade composite right/left-handed metamaterial,” Applied Physics Letters vol 102, 021103, January 14 2013.
• P. W. C. Hon, A. A. Tavallaee, Q.-S. Chen, B. S. Williams, and T. Itoh, “Radiation Model for Terahertz Transmission-Line Metamaterial Quantum-Cascade Lasers,” IEEE Trans. Terahertz Science and Technology vol. 2, no 3, pp. 323-332, May 2012. Winner of 2013 IEEE Transactions on THz Science and Technology Best Paper Award.
• Benjamin S. Williams, “Terahertz quantum cascade lasers.” Nature Photonics, vol. 1, September 2007, pp. 517-525. (review article)
• B. S. Williams, H. Callebaut, S. Kumar, Q. Hu and J. L. Reno, “3.4-THz quantum cascade laser based on longitudinal-optical-phonon scattering for depopulation.” Applied Physics Letters, vol. 82, no. 7, 17 Feb. 2003, pp. 1015-7.