Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Martin E. Smithers"'
Publikováno v:
Advances in Metrology for X-Ray and EUV Optics.
We are developing grazing-incidence x-ray optics for a balloon-borne hard-x-ray telescope (HERO). The instrument will have 200 cm2 effective collecting area at 40 keV and an angular resolution goal of 15 arcsec. The HERO mirror shells are fabricated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0a696a3469267cc8cc875d9664ef048
https://doi.org/10.1117/12.621170
https://doi.org/10.1117/12.621170
Autor:
Mikhail V. Gubarev, Steve L. O'Dell, Thomas J. Kester, David L. Lehner, William D. Jones, Martin E. Smithers, David A. Content, Paul B. Reid
Publikováno v:
Optical Fabrication, Metrology, and Material Advancements for Telescopes.
The Constellation-X Spectroscopy X-ray telescope (SXT) is designed to be built from X-ray optic segments. The X-ray segments will be fabricated from the segmented mandrels using a replication process. The purpose of the incoming metrology is to map t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcde22b5e330f38d6399691fed20553c
https://doi.org/10.1117/12.551902
https://doi.org/10.1117/12.551902
Publikováno v:
SPIE Proceedings.
Ground based testing is a critical and costly part of component, assembly, and system verifications of large space telescopes. At such tests, however, with integral teamwork by planners, analysts, and test personnel, segments can be included to valid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c5c12a41ad07e43245d0b68d8fc5fdd
https://doi.org/10.1117/12.461417
https://doi.org/10.1117/12.461417
Autor:
Martin E. Smithers, John W. Keidel, Lawrence Donald Craig, Max E. Nein, Todd Cline, H. Philip Stahl, James B. Hadaway
Publikováno v:
SPIE Proceedings.
This paper discusses NASTRAN structural analysis of the Sub-Scale Beryllium Mirror Demonstrator (SBMD), which has been developed by Ball Aerospace as an experimental design concept for the Next Generation Space Telescope (NGST). The mirror was repeat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c9bb7403fdf89c7bbca3e8d0e0010c6
https://doi.org/10.1117/12.447325
https://doi.org/10.1117/12.447325
Publikováno v:
SPIE Proceedings.
The Krylov matrix method is a powerful numerical algorithm for efficiently and accurately calculating several of the lowest loss transverse bare cavity eigenmodes of unstable optical resonators. In current laser models, loaded cavity modes are calcul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::087898eb115401a733c28c04e313156e
https://doi.org/10.1117/12.58942
https://doi.org/10.1117/12.58942
Autor:
Eugene Y. C. Lu, Martin E. Smithers
Publikováno v:
Physical Review A. 10:1874-1880
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::784e1b30d3beea83411032ffea8ca1bb
https://doi.org/10.1103/physreva.10.1874
https://doi.org/10.1103/physreva.10.1874
Autor:
Eugene Y. C. Lu, Martin E. Smithers
Publikováno v:
Physical Review A. 9:790-801
Photon statistics are obtained from exact closed-form solutions for both spontaneous and stimulated coherent emissions by a large number of two-level atoms in a Dicke state. Depending on the initial excitation level of the atoms, three types of photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0e9dffa69736078b89eac4be8fc502e
https://doi.org/10.1103/physreva.9.790
https://doi.org/10.1103/physreva.9.790
Publikováno v:
Applied optics. 25(5)
The deleterious effects of diffraction by the outcoupling aperture on optical resonator intensity profiles, feedback ratios, alignment sensitivities, and dependence of mode separation on Fresnel numbers can be alleviated by adding a phase step near t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49200fb335dcca638f7f645606db2d5d
https://pubmed.ncbi.nlm.nih.gov/18231233
https://pubmed.ncbi.nlm.nih.gov/18231233
Publikováno v:
Conference on Lasers and Electro-Optics.
Misalignment of unstable optical resonators can have significant deleterious effects on the transverse modes. As previously reported,1 actual mode switching may occur at mirror tilt angles that are small compared with the geometrical critical angle.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45cbdfb12f22ace002e2ff0ee6aebb0c
https://doi.org/10.1364/cleo.1984.tub34
https://doi.org/10.1364/cleo.1984.tub34
Autor:
Martin E. Smithers
Publikováno v:
Topical Meeting on Coherent Laser Radar Technology and Applications.
The mode-medium interaction (MMI) in pulsed carbon-dioxide lasers results from the laser-induced medium perturbation (LIMP) effect. 1 The LIMP effect is due to the faster vibration-translation (V-T) deactivation rate of the lower laser level compared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b459e0677a15c71acaea30a7479ad423
https://doi.org/10.1364/clr.1987.ma4
https://doi.org/10.1364/clr.1987.ma4