Large-scale brightness enhancement of quasi-continuous cascaded diamond Raman laser at eye-safe wavelength (Conference Presentation)

2019 ◽  
Author(s):  
Zhenxu Bai ◽  
Robert J. Williams ◽  
Ondrej Kitzler ◽  
Soumya Sarang ◽  
David J. Spence ◽  
...  
Keyword(s):  
Large Scale ◽  
Raman Laser ◽  
Brightness Enhancement

scholarly journals 302 W quasi-continuous cascaded diamond Raman laser at 15 microns with large brightness enhancement

2018 ◽  
Vol 26 (16) ◽  
pp. 19797 ◽  
Author(s):  
Zhenxu Bai ◽  
Robert J. Williams ◽  
Ondrej Kitzler ◽  
Soumya Sarang ◽  
David J. Spence ◽  
...  
Keyword(s):  
Raman Laser ◽  
Brightness Enhancement

scholarly journals Brightness enhancement and beam profiles in an LD-pumped graded-index fiber Raman laser

OSA Continuum ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 1034
Author(s):  
Alexey G. Kuznetsov ◽  
Sergey I. Kablukov ◽  
Evgeny V. Podivilov ◽  
Sergey A. Babin
Keyword(s):  
Raman Laser ◽  
Graded Index ◽  
Brightness Enhancement

scholarly journals Over 400 W graded-index fiber Raman laser with brightness enhancement

2021 ◽  
Author(s):  
Chenchen Fan ◽  
Yizhu Chen ◽  
Tianfu Yao ◽  
Hu Xiao ◽  
Xu Jiangming ◽  
...  
Keyword(s):  
Raman Laser ◽  
Graded Index ◽  
Brightness Enhancement

scholarly journals Large brightness enhancement for quasi-continuous beams by diamond Raman laser conversion

2018 ◽  
Vol 43 (3) ◽  
pp. 563 ◽  
Author(s):  
Zhenxu Bai ◽  
Robert J. Williams ◽  
Hadiya Jasbeer ◽  
Soumya Sarang ◽  
Ondrej Kitzler ◽  
...  
Keyword(s):  
Raman Laser ◽  
Brightness Enhancement ◽  
Continuous Beams

Brightness enhancement of continuous-wave beams using a diamond Raman laser

2017 ◽  
Author(s):  
Zhenxu Bai ◽  
Robert J. Williams ◽  
Hadiya Jasbeer ◽  
Soumya Sarang ◽  
Aaron McKay ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Raman Laser ◽  
Brightness Enhancement

Some comments about observations and image processing of comet 29P/Schwassmann-Wachmann 1

1999 ◽  
Vol 173 ◽  
pp. 243-248
Author(s):  
D. Kubáček ◽  
A. Galád ◽  
A. Pravda
Keyword(s):  
Image Processing ◽  
Large Scale ◽  
Harvard College ◽  
Oak Ridge ◽  
Large Scale Structures ◽  
Short Period Comet ◽  
Short Period ◽  
Scale Structures ◽  
Harvard College Observatory ◽  
Period Comet

AbstractUnusual short-period comet 29P/Schwassmann-Wachmann 1 inspired many observers to explain its unpredictable outbursts. In this paper large scale structures and features from the inner part of the coma in time periods around outbursts are studied. CCD images were taken at Whipple Observatory, Mt. Hopkins, in 1989 and at Astronomical Observatory, Modra, from 1995 to 1998. Photographic plates of the comet were taken at Harvard College Observatory, Oak Ridge, from 1974 to 1982. The latter were digitized at first to apply the same techniques of image processing for optimizing the visibility of features in the coma during outbursts. Outbursts and coma structures show various shapes.

Evolution of Large-Scale Coronal Structures

1994 ◽  
Vol 144 ◽  
pp. 29-33
Author(s):  
P. Ambrož
Keyword(s):  
Magnetic Field ◽  
Field Line ◽  
Large Scale ◽  
Coronal Magnetic Field ◽  
Source Surface ◽  
Solar Cycles ◽  
Characteristic Relationship ◽  
The Magnetic Field ◽  
Coronal Structures

AbstractThe large-scale coronal structures observed during the sporadically visible solar eclipses were compared with the numerically extrapolated field-line structures of coronal magnetic field. A characteristic relationship between the observed structures of coronal plasma and the magnetic field line configurations was determined. The long-term evolution of large scale coronal structures inferred from photospheric magnetic observations in the course of 11- and 22-year solar cycles is described.Some known parameters, such as the source surface radius, or coronal rotation rate are discussed and actually interpreted. A relation between the large-scale photospheric magnetic field evolution and the coronal structure rearrangement is demonstrated.

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

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