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Benjamin S. Williams

University of California, Los Angeles · US
Area of research
Electrical and Electronic Engineering · Spectroscopy
Research interest
Research interests include Spectroscopy and Laser Applications, Semiconductor Lasers and Optical Devices, Terahertz technology and applications, and Photonic and Optical Devices.
h-index
40
citations
8,312
works
259
NIH funding
primary concept
email

Recent publications

Introduction to photonics and quantum technologies celebrating the 30 <sup>th</sup> anniversary of the quantum cascade laser
Optics Express 2026cited by 0position: contributordoi
Quantum cascade laser: 30 years of discoveries.
2025cited by 0position: contributordoi
Multi-mode THz quantum-cascade VECSELs based on disordered metasurfaces.
2025cited by 0position: contributordoi
Continuous‐wave GaAs/AlGaAs quantum cascade laser at 5.7 THz
Nanophotonics 2024cited by 23position: lastdoi
Continuous-wave GaAs/AlGaAs quantum cascade laser at 5.7 THz.
2024cited by 4position: contributordoi
Harmonic and Subharmonic RF Injection Locking of THz Metasurface Quantum-Cascade VECSEL.
2024cited by 2position: contributordoi
Multi-bounce self-mixing in terahertz metasurface external-cavity lasers.
2024cited by 1position: contributordoi
A 0.4-4 THz p-i-n Diode Frequency Multiplier in 90-nm SiGe BiCMOS
IEEE Journal of Solid-State Circuits 2023cited by 13position: contributordoi
Wavelength Scaling of Widely-Tunable Terahertz Quantum-Cascade Metasurface Lasers
IEEE Journal of Microwaves 2023cited by 6position: contributordoi
Phase Locking of a THz QC-VECSEL to a Microwave Reference
IEEE Transactions on Terahertz Science and Technology 2023cited by 5position: contributordoi
Optical injection locking of a THz quantum-cascade VECSEL with an electronic source.
2023cited by 1position: contributordoi
Phase locking of THz QC-VECSELs to a microwave reference
2023cited by 0position: contributordoi
Continuous wave operation of terahertz metasurface quantum-cascade VECSEL with a long intra-cryostat cavity
Applied Physics Letters 2022cited by 6position: contributordoi
Measurement of amplification and absorption of a THz quantum-cascade metasurface free-space amplifier
AIP Advances 2022cited by 0position: contributordoi
THz time-domain characterization of amplifying quantum-cascade metasurface
Applied Physics Letters 2021cited by 21position: contributordoi
Thin THz QCL active regions for improved continuous-wave operating temperature
AIP Advances 2021cited by 17position: contributordoi
Multi-mode lasing in terahertz metasurface quantum-cascade VECSELs
Applied Physics Letters 2021cited by 6position: contributordoi
Tunable quantum-cascade VECSEL operating at 1.9 THz.
2021cited by 0position: contributordoi
Terahertz quantum-cascade patch-antenna VECSEL with low power dissipation
Applied Physics Letters 2020cited by 17position: contributordoi
Erratum: “Terahertz quantum-cascade patch-antenna VECSEL with low power dissipation” [Appl. Phys. Lett. <b>116</b> , 241103 (2020)]
Applied Physics Letters 2020cited by 1position: contributordoi
Broadband continuous single-mode tuning of a short-cavity quantum-cascade VECSEL
Nature Photonics 2019cited by 104position: lastdoi
Broadband continuous single-mode tuning of a short-cavity quantum-cascade VECSEL
Nature Photonics 2019cited by 93position: contributordoi
Room-Temperature Midwavelength Infrared InAsSb Nanowire Photodetector Arrays with Al<sub>2</sub>O<sub>3</sub> Passivation
Nano Letters 2019cited by 74position: middledoi
Terahertz quantum cascade VECSEL with watt-level output power
Applied Physics Letters 2018cited by 61position: lastdoi
Terahertz Lasers
Encyclopedia of Modern Optics 2017cited by 1position: firstdoi
Quantum cascade lasers: 20 years of challenges
Optics Express 2015cited by 499position: middledoi
Metasurface external cavity laser
Applied Physics Letters 2015cited by 95position: lastdoi
Progress on DCLL Blanket Concept
Fusion Science & Technology 2013cited by 13position: middledoi

Grants

Collaborative Research: Near Field Population Synthesis
NSF2511540$279,5332025–2028PIRePORTER
NSF-SNSF: THz Frequency combs with Vertical-External-Cavity Surface-Emitting-Lasers
NSF2440163$408,0502024–2027PIRePORTER
FuSe: Electronic-photonic heterogeneous integration for sensing above 1 THz
NSF2329124$1,957,1802023–2027PIRePORTER
Collaborative Research: SiGeSn-based heterostructures for intersubband photonic materials
NSF2320178$257,5002023–2026PIRePORTER
Mode-locked THz QC-VECSELs
NSF2041165$481,9502021–2024PIRePORTER
Travel Support of Infrared Terahertz Quantum Workshop 2019, To Be Held in Ojai California, September 15-20 2019
NSF1901772$12,0002019–2019PIRePORTER
GOALI: Mid-infrared quantum-cascade metasurfaces for external cavity lasers
NSF1809673$422,5182018–2022PIRePORTER
Engineered antiferromagnetic materials for terahertz magnon-polaritons
NSF1810163$400,0002018–2021PIRePORTER
Broadband terahertz metasurface lasers
NSF1711892$401,4262017–2021PIRePORTER
NSF INCLUDES DDLP: IM STEM
NSF1744472$299,9942017–2020PIRePORTER
Active THz polarization laser imaging
NSF1610892$337,9982016–2020PIRePORTER
Nanopillar quantum cascade lasers
NSF1509801$464,9242015–2019PIRePORTER
Terahertz quantum-cascade vertical external cavity surface emitting lasers
NSF1407711$421,8272014–2017PIRePORTER
International Quantum Cascade Laser School and Workshop 2014. To Be Held in Policoro (Matera)Italy from September 7-12 2014.
NSF1433082$15,0002014–2015PIRePORTER
PECASE: Widely tunable monolithic THz waveguides, lasers, and arrays
NSF1150071$404,8002012–2017PIRePORTER
Nanowire heterostructures for intersubband lasers
NSF1002387$374,6972010–2013PIRePORTER
GOALI: Terahertz Transmission-Line Metamaterials for Quantum Cascade Lasers
NSF0901827$545,5262009–2012PIRePORTER

Frequent collaborators

· 14 papers (2019–2026) · 6 papers (2020–2023)Christopher A. Curwen · California Institute of Technology4 papers (2015–2024)Sadhvikas Addamane · University of Florida4 papers (2021–2022)Boris S. Karasik · 3 papers (2021–2023)John L. Reno · Massachusetts Institute of Technology2 papers (2018–2019)Mohammad Shahili · University of California, Los Angeles2 papers (2019–2024)Yu Wu · Guizhou Electric Power Design and Research Institute2 papers (2021–2022)Paolo De Natale · AIP Publishing LLC2 papers (2025–2026)Miriam Serena Vitiello · Scuola Normale Superiore2 papers (2025–2026)Sadhvikas Addamane · Sandia National Laboratories2 papers (2023–2023) · 2 papers (2023–2023)John L. Reno · 2 papers (2023–2023)Philip W. C. Hon · Northrop Grumman (United States)1 papers (2015–2015)Giacomo Scalari · Lund University1 papers (2015–2015)T. Itoh · University of California, Los Angeles1 papers (2015–2015)Miriam S. Vitiello · Università Campus Bio-Medico1 papers (2015–2015)Sadhvikas Addamane · University of Arizona1 papers (2024–2024)S. Smolentsev · Oak Ridge National Laboratory1 papers (2013–2013)Siddharth Somasundaram · Massachusetts Institute of Technology1 papers (2019–2019)