THIS GRANT IS A CONTINUATION OF N000141410573 - Plasmonic Heterodyne Receivers for Single-Photon Terahertz Spectrometry
Abstract
Short Work StatementFunds are provided to investigate plasmonic device technology. The PI is Prof. Mona Jarrahi at the University of California, Los Angeles. This grant is funded through the Presidential Early Career Award in Science and Engineering (PECASE) program.This is a five year grant funded at $200K/year, totaling $1,000,000An increment of $100K is provided to support the effort through FY14PI is investigating plasmonic-based approaches for the realization of high sensitivity, quantum-limited single-photon detection Terahertz spectrometry. The PI will conduct an extensive study on interaction of electromagnetic waves with a variety of one-dimensional and two-dimensional plasmonic antennas based on one-dimensional and two-dimensional arrays of subwavelength metallic apertures and/or corrugations. Plasmonic antenna specifications that will be analyzed during this study include their operation frequency, bandwidth and polarization dependence. This study will be carried out through a combination of analytical and numerical solution of Maxwell?s equations through commercial electromagnetic software packages such as HFSS and COMSOL. The plasmonic antennas which have been theoretically studied will be fabricated to experimentally evaluate the performance. Plasmonic antenna prototypes optimized for operation in 1.55 um wavelength range on an In0.53Ga0.47As substrate by use of e-beam lithography. Transmission of an incident 1.55 um electromagnetic wave into the nanoscale plasmonic antenna apertures will be evaluated by measuring the generated photocurrent as a function of the incident wave frequency and polarization. In order to achieve ultra-short carrier transport times required for ultrafast operation of terahertz devices, approaches for efficient plasmonic coupling of incident electromagnetic waves into nanoscale device dimensions will be investigated. A COMSOL multi-physics simulator will be used to identify fundamental limits for ultrafast response of nanoscale devices coupled to plasmonic antennas including electromagnetic device governing equations such as continuity equations, Poisson equations, and current density (drift/diffusion) equations to calculate device impulse response. Plasmonic antenna geometries suitable for operation over multiple frequency ranges will be theoretically and experimentally investigated. ObjectiveThe objective of proposed research is to explore a new generation of optically-pumped plasmonic terahertz mixers for high sensitivity terahertz heterodyne spectrometersApproachThe PI will conduct an extensive study on interaction of electromagnetic waves with a variety of one-dimensional and two-dimensional plasmonic antennas based on one-dimensional and two-dimensional arrays of subwavelength metallic apertures and/or corrugations. Plasmonic antenna specifications that will be analyzed during this study include their operation frequency, bandwidth and polarization dependence. This study will be carried out through a combination of analytical and numerical solution of Maxwell s equations through commercial electromagnetic software packages such as HFSS and COMSOL. The plasmonic antennas which have been theoretically studied will be fabricated to experimentally evaluate the performance. Plasmonic antenna prototypes optimized for operation in 1.55 um wavelength range on an In0.53Ga0.47As substrate by use of e-beam lithography. Transmission of an incident 1.55 um electromagnetic wave into the nanoscale plasmonic antenna apertures will be evaluated by measuring the generated photocurrent as a function of the incident wave frequency and polarization. In order to achieve ultra-short carrier transport times required for ultrafast operation of terahertz devices, approaches for efficient plasmonic coupling of incident electromagnetic waves into nanoscale device dimensions will be investigated. A COMSOL multi-physics simulator will be used to identify fundamental limits for ultrafast response of na
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 26, 2018
- Source ID
- N000141612685
Entities
People
- Mona Jarrahi
Organizations
- Office of Naval Research
- United States Navy
- University of California, Los Angeles