Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Ralph F. Wuerker"'
Autor:
Ralph F. Wuerker
Publikováno v:
International Journal of Mass Spectrometry. :1-7
In the late 1950’s, a Paul trap was investigated as a way to electrically charge micron size iron particles, for a laboratory micrometeor simulator. Particles could be charged but not high enough. The alternating quadrupole electric field was found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74fc4d10d94fbbb0ea40daf9c8b595e9
https://doi.org/10.1016/s1387-3806(98)14288-4
https://doi.org/10.1016/s1387-3806(98)14288-4
Publikováno v:
Applied optics. 28(15)
We have investigated experimentally the parameters which govern the effective interaction length at threshold for phase conjugation due to stimulated Brillouin scattering. We found the length to be the shorter of the following parameters: the cell le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1beb008e39bfd339ed61a2a279df01d
https://pubmed.ncbi.nlm.nih.gov/20555657
https://pubmed.ncbi.nlm.nih.gov/20555657
Autor:
Jesper Munch, Ralph F. Wuerker
Publikováno v:
Applied optics. 28(7)
A holographic technique for correcting aberrations in a telescope objective is presented. An image hologram of the aberrations is used as a correction plate to cancel out all the aberrations of the objective. Experimental results demonstrate diffract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a6348d81c4b92e37f19cde42b7c7fbe
https://pubmed.ncbi.nlm.nih.gov/20548657
https://pubmed.ncbi.nlm.nih.gov/20548657
Publikováno v:
Applied optics. 28(5)
We present a holographic method for measuring directly the complete temporal coherence function of a pulsed laser on a single pulse. The method is easy to implement and yields the exact coherence length even for lasers with complex spectral content w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76268f758d59914b30e6c93b030d1eb0
https://pubmed.ncbi.nlm.nih.gov/20548605
https://pubmed.ncbi.nlm.nih.gov/20548605
Publikováno v:
Applied optics. 28(2)
It is shown that old surplus ruby laser components found in most large research establishments can be reassembled into a configuration yielding high energy pulses of optical quality. The highquality, low cost, and flexible design is well suited for m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::517aefa3d62a80b7745c727b0ccf4031
https://pubmed.ncbi.nlm.nih.gov/20548457
https://pubmed.ncbi.nlm.nih.gov/20548457
Autor:
Ralph F. Wuerker
Publikováno v:
SPIE Proceedings.
The development of the wave nature of light, over the last 430 years, resulted in the off-axis or Leith hologram. Earlier contributions were expressions for the resolution of microscopes and telescopes and the first color photographs. X-ray diffracti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16f0137ba441ff6f602d90a3fca44208
https://doi.org/10.1117/12.686723
https://doi.org/10.1117/12.686723
Autor:
Ralph F. Wuerker
Publikováno v:
Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV.
A bistatic lidar has been assembled at the HIPAS Observatory in Alaska (64.9 degree(s) N latitude and 146.8 degree(s) W) around a 2.7 m diameter rotating Liquid Mirror Telescope (LMT) with parabolic mercury reflecting surface. The LMT is isolated in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3b136c68cde8beaf59e01a2be0de08
https://doi.org/10.1117/12.454264
https://doi.org/10.1117/12.454264
Autor:
Ralph F. Wuerker
Publikováno v:
Physics Today. 63:9-10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e4b8a80982bf65ed387f60118aa47fc
https://doi.org/10.1063/1.4796259
https://doi.org/10.1063/1.4796259
Autor:
Ralph F. Wuerker
Publikováno v:
SPIE Proceedings.
The advent of inexpensive large aperature near diffraction limited Liquid Mirror Telescopes (LMT's) makes possible applications not sensitive to their near vertical viewing nature; such as, astronomical surveys, space debris surveys, lidar collectors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58352e1f018c77726e2ba546708fdb97
https://doi.org/10.1117/12.355024
https://doi.org/10.1117/12.355024
Autor:
Ralph F. Wuerker
This is a 1997 Defense University Research Instrumentation Program (DURIP-97) award of a laser for the lidar at the UCLA HIPAS Observatory, Fairbanks, Alaska. The new 20 Hz laser will be used primarily to study the arctic sodium layer, between 90 to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30ba9210d3f9639a9d0bd9d12be872aa
https://doi.org/10.21236/ada628460
https://doi.org/10.21236/ada628460
