Browsing Conference Proceedings by Title

Now showing items 2-9 of 9

    • Combining laser frequency combs and iodine cell calibration techniques for Doppler detection of exoplanets 

      Cahoy, K.; Fischer, D.; Spronck, J.; Demille, D. (SPIE - The International Society for Optical Engineering, 2010)
      Exoplanets can be detected from a time series of stellar spectra by looking for small, periodic shifts in the absorption features that are consistent with Doppler shifts caused by the presence of an exoplanet, or multiple ...

    • CubeSat deformable mirror demonstration 

      Cahoy, K.; Marinan, A.; Kerr, C.; Cheng, K.; Jamil, S. (SPIE - The International Society for Optical Engineering, 2012)
      The goal of the CubeSat Deformable Mirror Demonstration (DeMi) is to characterize the performance of a small deformable mirror over a year in low-Earth orbit. Small form factor deformable mirrors are a key technology needed ...

    • Design of the Deformable Mirror Demonstration CubeSat (DeMi) 

      Douglas, Ewan; Allan, Gregory; Barnes, Derek; Figura, Joseph S.; Haughwout, Christian A.; e.a. (Proc SPIE, 2017-09)
      The Deformable Mirror Demonstration Mission (DeMi) was recently selected by DARPA to demonstrate in-space operation of a wavefront sensor and Microelectromechanical system (MEMS) deformable mirror (DM) payload on a 6U ...

    • Direct imaging of exoEarths embedded in clumpy debris disks 

      Defrere, D.; Stark, C.; Cahoy, K.; Beerer, I. (SPIE - The International Society for Optical Engineering, 2012)
      The inner solar system, where the terrestrial planets formed and evolve, is populated by small grains of dust produced by collisions of asteroids and outgassing comets. At visible and infrared wavelengths, this dust cloud ...

    • 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 ...

    • 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 ...

    • Laser Beacon Tracking for High-Accuracy Attitude Determination 

      Nguyen, Tam; Cahoy, Kerri (29th Annual AIAA/USU Conference on Small Satellites, 2015-08)
      CubeSat pointing capabilities have greatly improved in the past few years, paving the way for more sophisticated science and technology demonstration missions. Advances in attitude determination have led to the development ...

    • 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 ...