Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Olga B. Spahn"'
Publikováno v:
Journal of Lightwave Technology. 27:879-886
A new optical configuration for switching light beams called a spherical Fourier cell is explained. Its use for optical true time delay is outlined. An experimental apparatus was constructed for a 6-bit delay system, with 2 bits demonstrated. Delays
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcff9ede44a36187d47651f14a83cf6c
https://doi.org/10.1109/jlt.2008.927762
https://doi.org/10.1109/jlt.2008.927762
Autor:
Grant D. Grossetete, Alejandro J. Grine, Daryl J. Dagel, William D. Cowan, Olga B. Spahn, Michael J. Shaw, Bernhard Jokiel, Paul J. Resnick
Publikováno v:
Journal of Microelectromechanical Systems. 15:572-583
Surface-micromachined deformable mirrors that exhibit greater than 10 /spl mu/m of stroke are presented. The segmented arrays described here consist of 61 and 85 hexagonal, piston/tip/tilt mirrors (three actuators each) with diameters of 500 and 430
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9b2d62ad7f90edf8991e12493027a38
https://doi.org/10.1109/jmems.2006.876794
https://doi.org/10.1109/jmems.2006.876794
Autor:
Gregory M. Peake, Adam M. Rowen, Dustin Heinz Romero, Michael Joseph Cich, John F. Klem, Christian L. Arrington, Olga B. Spahn, Thomas J. Nash
Microfabrication methods have been applied to the fabrication of wire arrays suitable for use in Z. Self-curling GaAs/AlGaAs supports were fabricated as an initial route to make small wire arrays (4mm diameter). A strain relief structure that could b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d41fb010d4c48c7ab8856eef7c909b43
https://doi.org/10.2172/945909
https://doi.org/10.2172/945909
Autor:
Grant D. Grossetete, William D. Cowan, C.C. Wong, David P. Adams, Olga B. Spahn, L.M. Phinney
Publikováno v:
2008 IEEE/LEOS International Conference on Optical MEMs and Nanophotonics.
A number of applications require optical MEMS devices to handle high optical power. We present theoretical and experimental results for SUMMiTtrade fabricated mirrors and other structures illustrating performance limitations and several mitigation st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d2eeda7ea6b7805385addb537eca0a2
https://doi.org/10.1109/omems.2008.4607832
https://doi.org/10.1109/omems.2008.4607832
Autor:
William D. Cowan, Grant D. Grossetete, Olga B. Spahn, L.M. Phinney, C.C. Wong, David P. Adams
Publikováno v:
2008 8th IEEE Conference on Nanotechnology.
A number of applications require optical MEMS devices to handle high optical power or thermal variations. We present theoretical and experimental results for SUMMiTTM fabricated mirrors and other structures that illustrate performance limitation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6e6eb344205c144abf329b802b33c3b
https://doi.org/10.1109/nano.2008.133
https://doi.org/10.1109/nano.2008.133
Autor:
Christopher C. Wilcox, Sergio R. Restaino, Brett E. Bagwell, Jonathan R. Andrews, Ty Martinez, William D. Cowan, Olga B. Spahn, Scott W. Teare, David V. Wick
Publikováno v:
SPIE Proceedings.
An all reflective Shack Hartmann style wavefront sensor has been developed using a Sandia National Laboratory segmented Micro-Electro-Mechanical (MEM) deformable mirror. This wavefront sensor is presently being explored for use with adaptive optics s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b49eb79d11e02efa3a11ccdc6d0f6a1
https://doi.org/10.1117/12.763866
https://doi.org/10.1117/12.763866
Autor:
Stephen J. Martin, Jennifer M. Harwell, Stephen W. Howell, Olga B. Spahn, Jeffrey B. Martin, Grant G. Grossetete, Grover A. Swartzlander
Publikováno v:
SPIE Proceedings.
Previous work has shown that single-beam gradient traps are unable to trap high index particles in fluids where the index contrast is large. However, by changing the refractive index of the surrounding medium to more closely match the index of refrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb3f8ff762289c5bac0df73f24e47c43
https://doi.org/10.1117/12.763376
https://doi.org/10.1117/12.763376
Autor:
Christopher P. Tigges, Olga B. Spahn, David L. Luck, Gregory N. Nielson, Steven J. Brewer, Paul J. Resnick, Roy H. Olsson, Grant D. Grossetete, Gregory R. Bogart, Michael R. Watts, Michael J. Shaw
We have proposed and demonstrated MEMS switching devices that take advantage of the dynamic behavior of the MEMS devices to provide lower voltage actuation and higher switching speeds. We have explored the theory behind these switching techniques and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d77a054698b31fffc843583389e822
https://doi.org/10.2172/928822
https://doi.org/10.2172/928822
Publikováno v:
2007 Conference on Lasers and Electro-Optics (CLEO).
We report a high-speed MEMS micromirror that switches in 225 ns using 22 V. Switch repetition rates of up to 100 kHz have been demonstrated. These performance characteristics significantly extend the application space of micromirrors.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da50635e65db95db978dea7b1657db65
https://doi.org/10.1109/cleo.2007.4452612
https://doi.org/10.1109/cleo.2007.4452612