Zobrazeno 1 - 8
of 8
pro vyhledávání: '"R. L. Armstead"'
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 9, Iss 3, p 030703 (2006)
Conventional free electron laser (FEL) oscillators minimize the optical mode volume around the electron beam in the undulator by making the resonator Rayleigh length about one third to one half of the undulator length. This maximizes gain and beam-mo
Externí odkaz:
https://doaj.org/article/070466095e9843b59c4db5829006dbaa
Autor:
William B. Colson, R. L. Armstead, P.P. Crooker, R. Vigil, T. Voughs, J. Blau, Bryant Williams
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 9, Iss 3, p 030703 (2006)
The article of record as published may be located at http://dx.doi.org/10.1103/PhysRevSTAB.9.030703 Conventional free electron laser (FEL) oscillators minimize the optical mode volume around the electron beam in the undulator by making the resonator
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f9dcddd52f209927208b8b3cab0caf4
https://doaj.org/article/070466095e9843b59c4db5829006dbaa
https://doaj.org/article/070466095e9843b59c4db5829006dbaa
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 393:262-264
To decrease power loading on cavity mirrors, a Gaussian mode with a very short Rayleigh length could be employed. We study the physics of the FEL interaction while shortening the Rayleigh length in the FEL oscillator. The results can be applied to th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9de084f7c9dcf8c840148d0a053be90e
https://doi.org/10.1016/s0168-9002(97)00488-9
https://doi.org/10.1016/s0168-9002(97)00488-9
The article of record as published may be located at http://dx.doi.org/10.1016/S0168-9002(03)00835-0 High-power, short-wavelength free electron lasers (FELs) can make use of a short-Rayleigh-length (SRL) optical mode in order to reduce the intensity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a4d143bf9cd8e96de3819976926786
https://hdl.handle.net/10945/44082
https://hdl.handle.net/10945/44082
Autor:
Alfred W. Cooper, E. A. Milne, E. C. Crittenden, R. L. Armstead, G. W. Rodeback, S. H. Kalmbach
Publikováno v:
Advances in Laser Technology for the Atmospheric Sciences.
The optical transfer function (OTF) of the atmosphere has been measured over the ocean for four wavelengths from visible to far IR, using laser sources and a slit scanning telescope. The effects of diffraction, finite slit width, and aberrations have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dbaa75d402b623e37a4307339d79eea
https://doi.org/10.1117/12.955867
https://doi.org/10.1117/12.955867
Autor:
E. C. Crittenden, Alfred W. Cooper, G. W. Rodeback, E. A. Milne, R. L. Armstead, S. H. Kalmbach
Publikováno v:
SPIE Proceedings.
The degradation in performance of imaging or beam projection systems, due to turbulence in the atmosphere, can be evaluated or predicted in terms of a path-position weighted value of Cn2, the optical turbulence structure constant. The degradation als
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67c323010b14ab2bfcc4860a704ff56d
https://doi.org/10.1117/12.956537
https://doi.org/10.1117/12.956537
Autor:
R. L. Armstead, E. C. Crittenden, Christopher W. Fairall, G. W. Rodeback, E. A. Milne, Gordon Schacher, Alfred W. Cooper, S. H. Kalmbach
Publikováno v:
SPIE Proceedings.
Optical transmission through the atmosphere is degraded both by the turbulence-induced fluctuation of the optical index, described by Cn², the turbulence structure constant for index, and also by extinction due to molecular absorption and scatteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::642fe91c2cb6f919214c020ee7ce9c4e
https://doi.org/10.1117/12.958283
https://doi.org/10.1117/12.958283
Autor:
S. H. Kalmbach, G. W. Rodeback, Alfred W. Cooper, E. A. Milne, E. C. Crittenden, R. L. Armstead
Publikováno v:
SPIE Proceedings.
The effects of atmospheric turbulence on imaging systems, and beam projection systemssuch as laser designators, can be evaluated and the performance predicted in terms of aproperly path- weighted value of the turbulence structure constant, C,4. An op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8c2723475dd69bee1bbb3cbdf316e7d
https://doi.org/10.1117/12.956089
https://doi.org/10.1117/12.956089