Nick Karl's Homepage

photo

About Me
  1. My résumé, talks and publications.
  2. I have some stuff on github (including this site)
Research

I began working at Brown University in August 2015. My doctoral advisor decided to take a new position and the group moved to Brown. This was a lot of work, involving dismantling our old lab (5 optical tables worth), and setting up the new lab. Each experimental setup needed to be rebuilt after the new lab space was renovated. I spent one month with collaborators at Redstone Arsenel in Huntsville, Alabama in the midst of this renovation process, we are publishing the results of that work now.

I also run simulations for some of the lab's other projects (including our artificial dielectric devices). And do metamaterial design for other projects in the lab. Details are in my resume.

I studied at Rice University from 2011 until the move in 2015. This is when I became interested in metamaterials and when we began work on the leaky waveguide multiplexer project which we would publish later.

Publications

Here are my publications from my graduate school work. Also see the list of talks in my resume.

  1. "Characterization of an Active Metasurface using Terahertz Ellipsometry"
    N. Karl, M. S. Heimbeck, H. O. Everitt, H.-T. Chen, A. J. Taylor, I. Brener, A. Benz, J. L. Reno, R. Mendis, D. M. Mittleman
    Applied Physics Letters, (in press)
  2. "Frequency-division multiplexer and demultiplexer for terahertz wireless links"
    J. Ma, N. Karl, S. Bretin, G. Ducournau, and D. M. Mittleman
    Nature Communications, 8, 729 (2017)
  3. "Nonlinear Terahertz Metamaterials with Active Electrical Control"
    G. Keiser, N. Karl, P. Liu, C. Tulloss, H.-T. Chen, A. J. Taylor, I. Brener, J. L. Reno, D. M. Mittleman
    Applied Physics Letters, 111, 121101 (2017)
  4. "Terahertz artificial dielectric lens"
    R. Mendis, M. Nagai, Y. Wang, N. Karl, D. M. Mittleman
    Nature Scientific Reports, 6, 23023 (2016)
  5. "Frequency-division multiplexing in the terahertz range using a leaky-wave antenna"
    N. Karl, W. M. Robert, Y. Monnai, R. Mendis, D. M. Mittleman
    Nature Photonics, 9, 717 (2015)
  6. "An electrically driven terahertz metamaterial diffraction modulator with over 20 dB of dynamic range"
    N. Karl, K. Reichel, H.-T. Chen, A. J. Taylor, I. Brener, A. Benz, J. L. Reno, R. Mendis, D. M. Mittleman
    Applied Physics Letters, 104, 091115 (2014)
OSA Leadership

I served as treasurer and subsequently president of the Rice student chapter of OSA. We organized many outreach and community events (photos) with funding from OSA student grants. OSA does a great job with their commitment to students. Participating in the OSA Student Leadership Conference in 2013 was a valuable experience.

I also hosted a highschool teacher as part of the NSF-RET program to perform research in our lab over summer break. (details)

The Future

The world is advancing at an ever accelerating pace, studying the future is a personal passion. I hope that by thinking about the future we can influence the current and next generation to explore the massive technological and social changes coming in the near future.

Drawing

I like making drawings and renders that make science and physics pretty.

phase modulator leaky waveguide

My Misc. Projects/Applications
Other Technical Resources