Zobrazeno 1 - 10
of 10
pro vyhledávání: '"R. W. Presta"'
Autor:
Jeffrey A. Koch, Wayne T. Whistler, Richard A. Sacks, Bruce W. Woods, Michael J. Dailey, R. Zacharias, Lynn G. Seppala, Fred R. Holdener, Scott Winters, Erlan S. Bliss, John S. Toeppen, Andrew Grey, Mark Feldman, J.T. Salmon, Bruno M. Van Wonterghem, Lewis Van Atta, R. W. Presta
Publikováno v:
Applied optics. 39(25)
We performed a direct side-by-side comparison of a Shack-Hartmann wave-front sensor and a phase-shifting interferometer for the purpose of characterizing large optics. An expansion telescope of our own design allowed us to measure the surface figure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::181e59a3fc34200bdab98daf3761fc9a
https://pubmed.ncbi.nlm.nih.gov/18350042
https://pubmed.ncbi.nlm.nih.gov/18350042
Autor:
Herbert W. Friedman, Jen Nan Wong, Holger E. Jones, Michael J. Newman, J. Thaddeus Salmon, Donald T. Gavel, Sherman L. Jenkins, Mark Feldman, R. W. Presta, Gary R. Thompson, Jeffrey B. Cooke, Thomas C. Kuklo, V.K. Kanz, Pamela M. Danforth, Edward L. Pierce, G. Erbert
Publikováno v:
SPIE Proceedings.
A laser system to generate sodium-layer guide stars has been designed, built and delivered to the Keck Observatory in Hawaii. The system uses frequency doubled YAG lasers to pump liquid dye lasers and produces 20 W of average power. The design and pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c33624a55d27f7a19b14d0d315a5f38d
https://doi.org/10.1117/12.321681
https://doi.org/10.1117/12.321681
Autor:
D. A. Rapp, Herbert W. Friedman, Donald T. Gavel, Kenneth Avicola, Brooks Johnston, James M. Brase, Horst D. Bissinger, Jong R. An, Kenneth E. Waltjen, R. W. Presta, J. Thaddeus Salmon, Claire E. Max, Scot S. Olivier, William A. Fisher
Publikováno v:
Adaptive Optics in Astronomy.
We will describe an adaptive optics system developed for the 1 meter Nickel and 3 meter Shane telescopes at Lick Observatory. Observing wavelengths will be in the visible for the 1 meter telescope and in the near IR on the 3 meter. The adaptive optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::871a2a94ab18a517c8805a9bca3433bd
https://doi.org/10.1117/12.176081
https://doi.org/10.1117/12.176081
Autor:
Stephen D. Mostek, Jen Nan Wong, Charles D. Swift, J. Thaddeus Salmon, Carolyn L. Weinzapfel, Kenneth E. Waltjen, Donald T. Gavel, Rodney J. Rinnert, Kenneth Avicola, Herbert W. Friedman, John W. Bergum, R. W. Presta, Claire E. Max, Scot S. Olivier, James M. Brase
Publikováno v:
Adaptive Optics in Astronomy.
We present the design and implementation of a very compact adaptive optics system that senses the return light from a sodium guide-star and controls a deformable mirror and a pointing mirror to compensate atmospheric perturbations in the wavefront. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa7e1c0ad7f8b887f8d2be9ad7dd26e8
https://doi.org/10.1117/12.176053
https://doi.org/10.1117/12.176053
Publikováno v:
Physical review. A, Atomic, molecular, and optical physics. 49(3)
We employ an alternative technique for determining the Lorentzian linewidth based upon the simultaneous measurement of the vapor transmission and group-velocity delay outside the Doppler core of an optically dense transition. We apply this technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2edc4bf4399d08e03af694101dfbc92
https://pubmed.ncbi.nlm.nih.gov/9910414
https://pubmed.ncbi.nlm.nih.gov/9910414
Publikováno v:
SPIE Proceedings.
We are developing an adaptive optics system that is based on an array of actuators arranged with subapertures that are equilateral triangles. The wavefront sensor is a video Hartmann sensor that also uses an equilateral array of lenslets. The control
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4587d7858bf2e83e2ada3950aeedd6d0
https://doi.org/10.1117/12.152669
https://doi.org/10.1117/12.152669
Autor:
Theresa W. Long, Charles D. Swift, R. W. Presta, Edward L. Orham, J. Thaddeus Salmon, Richard L. Ward, Erlan S. Bliss
Publikováno v:
SPIE Proceedings.
We have developed an adaptive optics system that corrects up to five waves of 2nd-order and 3M-order aberrations in a high-power laser beam to less than 1/10th wave RMS. The wavefront sensor is a Hartmann sensor with discrete lenses and position-sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e1c52a5e59495a7670100a2d8a281a9
https://doi.org/10.1117/12.48829
https://doi.org/10.1117/12.48829
Autor:
J. A. Horton, D. A. Rapp, J. M. Duff, Horst D. Bissinger, R. Kiefer, Kenneth E. Waltjen, James M. Brase, Herbert W. Friedman, Kenneth Avicola, Scot S. Olivier, J. T. Salmon, Donald T. Gavel, J. R. Morris, R. W. Presta, Claire E. Max
Publikováno v:
Journal of the Optical Society of America A. 11:813
We describe the design and the early results of a feasibility experiment for sodium-layer laser-guide-star adaptive optics. Copper-vapor-laser-pumped dye lasers from Lawrence Livermore National Laboratory’s Atomic Vapor Laser Isotope Separation pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1818c8e54b1f14626c5e9cd8feb95fe
https://doi.org/10.1364/josaa.11.000813
https://doi.org/10.1364/josaa.11.000813
Autor:
Herbert W. Friedman, J. M. Duff, D. A. Rapp, Kenneth Avicola, Horst D. Bissinger, Donald T. Gavel, J. R. Morris, J. T. Salmon, Scot S. Olivier, James M. Brase, Kenneth E. Waltjen, R. W. Presta, Claire E. Max
Publikováno v:
Journal of the Optical Society of America A. 11:825
We describe a series of experiments to characterize the sodium-layer guide star that was formed with the high-power laser developed for the Lawrence Livermore National Laboratory Atomic Vapor Laser Isotope Separation program. An emission spot size of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::364281c21fad71ed0582f89f3644045d
https://doi.org/10.1364/josaa.11.000825
https://doi.org/10.1364/josaa.11.000825
Autor:
Isaac L. Bass, R. W. Presta
Publikováno v:
SPIE Proceedings.
An intracavity-doubled, Q-switched, Nd:YAG laser side pumped by a pulsed, 3-bar, laser-diode array, produced a second harmonic output of 1.75 mJ/pulse at an optical conversion efficiency of 11.5%. We demonstrated the use of this laser to pump a pulse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7486e9b3ba7d7229345d2d147ea8ffe5
https://doi.org/10.1117/12.951180
https://doi.org/10.1117/12.951180