Now showing items 7-9 of 9

    • First results on a new PIAA coronagraph testbed at NASA Ames 

      Belikov, R.; Pluzhnik, E.; Connelley, M. S.; Witteborn, F. C.; Lynch, D. H.; e.a. (SPIE - The International Society for Optical Engineering, 2009-01-01)
      Direct imaging of extrasolar planets, and Earth-like planets in particular, is an exciting but difficult problem requiring a telescope imaging system with 1010 contrast at separations of 100 mas and less. Furthermore, the ...
    • Nonlinear Optics for Frequency-Doubling in Nanosatellite Laser Communication 

      Clark, James; Cahoy, Kerri (Utah State University Digital Commons, 2016-08-10)
      Free-space optical communication attracts interest due to its promise of higher data rates for similar size, weight, and power costs compared with radio systems. However, while satellite-to-ground optical communication has ...
    • End-to-end simulation of high-contrast imaging systems: methods and results for the PICTURE mission family 

      Douglas, Ewan S.; Hewawasam, Kuravi; Mendillo, Christopher B.; Cahoy, Kerri L; Cook, Timothy A.; e.a. (SPIE, 2015-09)
      We describe a set of numerical approaches to modeling the performance of spaceflight high-contrast imaging payloads. Mission design for high-contrast imaging requires numerical wavefront error propagation to ensure accurate ...