Surface temperature and distortion of optical elements exposed to high power synchrotron radiation beams (invited)

1989 ◽  
Vol 60 (7) ◽  
pp. 1474-1478 ◽  
Author(s):  
S. Mourikis ◽  
W. Jark ◽  
E. E. Koch ◽  
V. Saile
Keyword(s):  
Synchrotron Radiation ◽  
Surface Temperature ◽  
High Power ◽  
Optical Elements ◽  
Radiation Beams

Conserving the Coherence and Uniformity of Third-Generation Synchrotron Radiation Beams: the Case of ID19, a `Long' Beamline at the ESRF

1998 ◽  
Vol 5 (5) ◽  
pp. 1243-1249 ◽  
Author(s):  
José I. Espeso ◽  
Peter Cloetens ◽  
José Baruchel ◽  
Jürgen Härtwig ◽  
Trevor Mairs ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Angular Size ◽  
Third Generation ◽  
Optical Elements ◽  
X Ray ◽  
Front End ◽  
Ray Path ◽  
Radiation Beams

The lateral coherence length is of the order of 100 µm at the `long' (145 m) ID19 beamline of the ESRF, which is mainly devoted to imaging. Most of the optical elements located along the X-ray path can thus act as `phase objects', and lead to spurious contrast and/or to coherence degradation, which shows up as an enhanced effective angular size of the source. Both the spurious contrast and the coherence degradation are detrimental for the images (diffraction topographs, tomographs, phase-contrast images) produced at this beamline. The problems identified and the way they were solved during the commissioning of ID19 are reported. More particularly, the role of the protection foils located in the front end, the beryllium windows, the filters and the monochromator defects (scratches, dust, small vibrations) is discussed.

High Power Testing of Optical Connectors

2002 ◽  
Author(s):  
Paola Furcas ◽  
Rosanna Pastorelli ◽  
Giulia Salmini ◽  
Massimo Vanzi
Keyword(s):  
High Power ◽  
Optical Power ◽  
Environmental Issues ◽  
Optical Elements ◽  
Extraction Procedures ◽  
Equipment Operation ◽  
Burn Out ◽  
Power Testing

Abstract High optical power is considered as the source of failures in passive optical elements. Optical connectors, in particular, have been studied because of the unavoidable exposure of their optical interfaces to environmental issues during insertion and extraction. Cleaning and insertion/extraction procedures are investigated. Evidence for burn-out, depending on the different procedures, calls for new suitable rules for handling during equipment operation and testing.

Hard protective waterproof coating for high-power laser optical elements

2005 ◽  
Vol 30 (24) ◽  
pp. 3416 ◽  
Author(s):  
Masataka Murahara ◽  
Nobuhiro Sato ◽  
Akimitsu Ikadai
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Optical Elements
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