Zobrazeno 1 - 10
of 173
pro vyhledávání: '"M. M. Michaelis"'
Publikováno v:
Optics & Laser Technology. 39:306-312
A brief description of the Durban atmospheric LIDAR (acronym for light detection and ranging) system for the measurement of vertical temperature profiles is presented. In its original configuration, a 10 Hz-laser was used as the transmitter for the L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df8be8c692806b6c3d29bc2fb0723027
https://doi.org/10.1016/j.optlastec.2005.07.014
https://doi.org/10.1016/j.optlastec.2005.07.014
Autor:
M. M. Michaelis, Bob Bingham, J. Greenhalgh, Ric M. Allott, John Collier, Paul McKenna, Claude R. Phipps, Jonathan Phillips, David Neely
Significant advances have been made over the last decade to improve the performance, efficiency, and contrast of high peak and average power laser systems, driven by their use in a wide variety of fields, from the industrial to the scientific. As the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2946f75311c14ad83d11a351f256a5d
https://strathprints.strath.ac.uk/54334/1/Neely_etal_AO2014_energy_coupling_in_short_pulse_laser_solid_interactions.pdf
https://strathprints.strath.ac.uk/54334/1/Neely_etal_AO2014_energy_coupling_in_short_pulse_laser_solid_interactions.pdf
Publikováno v:
Nature Communications. 4
The lens is a well-understood optical component used for focusing light, but is almost exclusively made in the solid-state form and, thus, suffers from optical damage at high powers. Attempts to overcome this through the use of non-solid graded-index
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36bbd3ba57723535701354f95787c70e
https://doi.org/10.1038/ncomms2894
https://doi.org/10.1038/ncomms2894
Autor:
M. M. Michaelis, Herbert W. Friedman, E.V. George, G. Albrecht, James P. Reilly, Donald T. Gavel, John R. Murray, W. Priedhorsky, C. Ho, Claude R. Phipps
Publikováno v:
Scopus-Elsevier
When a large piece of space debris forced a change of flight plan for arecent U.S. Space Shuttle mission, the concept that we are trashing space as well as Earth finally attained broad public awareness. Almost a million pieces of debris have been gen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::460283c608e0503afe85b112e3197904
https://doi.org/10.1017/s0263034600009733
https://doi.org/10.1017/s0263034600009733
Publikováno v:
Review of Scientific Instruments. 66:5037-5044
In this paper we characterize the behavior of a new pulsed gas lens, the colliding shock lens. We show how input energy, electrical diameter, number of discharge electrodes, and enclosing the discharges, affect its optical aperture and focal length.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::034b0b4ea975eb73e736e41659197a6a
https://doi.org/10.1063/1.1146127
https://doi.org/10.1063/1.1146127
Autor:
M. M. Michaelis, Venkataraman Sivakumar, Hassan Bencherif, A. Moorgawa, Sandile B. Malinga, Sadhasivan R. Pillay, Nkanyiso Mbatha
Publikováno v:
South African Journal of Science, Vol 108, Iss 1/2 (2012)
South African Journal of Science
South African Journal of Science, AOSIS, 2012, 108 (1/2), pp.9. ⟨10.4102/sajs.v108i1/2.612⟩
South African Journal of Science, Volume: 108, Issue: 1-2, Pages: 01-09, Published: 2012
South African Journal of Science
South African Journal of Science, AOSIS, 2012, 108 (1/2), pp.9. ⟨10.4102/sajs.v108i1/2.612⟩
South African Journal of Science, Volume: 108, Issue: 1-2, Pages: 01-09, Published: 2012
International audience; Studying the middle atmospheric thermal structure over southern Africa is an important activity to improve the understanding of atmospheric dynamics of this region. Observations of a middle atmosphere thermal structure over Du
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29ebd088707bcaf120fd4e7d3c5cf094
http://192.168.0.108/index.php/sajs/article/view/9774
http://192.168.0.108/index.php/sajs/article/view/9774
Autor:
M. M. Michaelis
Publikováno v:
American Journal of Physics. 62:718-722
Magnetic pucks on an air table create a two dimensional ‘‘gas.’’ The pucks are accelerated around a race track forming a strong shock and a rarefaction wave. The shock density reaches the limit given by the Rankine Hugoniot equations. A shock
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4b2013cdae33b095e49e64e39028804
https://doi.org/10.1119/1.17503
https://doi.org/10.1119/1.17503
Autor:
Claude R. Phipps, M. M. Michaelis
Publikováno v:
Laser and Particle Beams. 12:23-54
It is not often that a new form of transportation suddenly appears and replaces what was hitherto regarded as mankind's only realistic option. In space and upper atmosphere transportation, chemical rockets have held center stage for over half a centu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f776631ebea62f67d7c482fb8e3739f
https://doi.org/10.1017/s0263034600007217
https://doi.org/10.1017/s0263034600007217
Autor:
Andrew Forbes, M. M. Michaelis
Publikováno v:
Vacuum. 45:57-60
The principle of tensional as opposed to compressional vacuum vessels is reviewed. Proof of principle experiments is performed. Conceptual extensions of the idea, the inflatable vacuum chamber, the lightweight or even weightless chamber, are proposed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c23134ded1d80481e26bfe45aa60a62
https://doi.org/10.1016/0042-207x(94)90342-5
https://doi.org/10.1016/0042-207x(94)90342-5
Publikováno v:
ResearcherID
We show how a varifocal pulsed gas lens, the colliding shock lens, can be used as an intracavity element to Q switch a ruby laser. By placement of the shock lens in tandem with a second lens, a giant pulse is obtained. The second lens may be a conven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61c4b2955e5851c8cbe843e21ae0b421
https://pubmed.ncbi.nlm.nih.gov/21037614
https://pubmed.ncbi.nlm.nih.gov/21037614