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⇤ ← Revision 4 as of 2012-03-04 17:20:33 →
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Editor: KiwamuIzumi
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Deletions are marked like this. Additions are marked like this.
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= Beam Profiler for large beams = = Beam Profilers for large beams =
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'''[[../|..Up]]''' '''[[KAGRA/Subgroups/AOS| back to AOS top]]'''
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The scope of Beam Profiler for large beams is to check the beam mode in the phase of initial alignment of optics.  . The Beam Profilers for large beams is to be used to check the beam mode (power spacial distribution) during the commissioning phase of the intereferometer.
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== Applicable Documents == == Current Status ==
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=872|JGW-T1200872]]
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The mode matching is one of the important step to construct an optical cavity. For KAGAR, the beam size will be about 10cm diameter,
while there are no such an equipment that is able to measure the such a large beam size.
Thus we should develop such tool.		  . The mode matching is one of the important step to operate an optical cavity, and thus a beam profiler can help the commissioning phase.
 . For KAGRA, the beam size will become about 100 mm diameter.
 . There seems no commercial products that is able to measure such a large beam size so far, and we will develop such a tool.
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Measuring the spatial distribution of intensities of a laser beam.

  * Measuring a spatial distribution of intensities of a laser beam for 300 mm diameter.
 * Visualizing the measured data on site and remote in real time (live view).
 * Offering any other functions that are usually equipped in commercial beam profilers. (Fit-function of the measured data with Gaussian profile, Functions of statistical processing, Functions of exporting the measured data)
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Anywhere in the initial alignment phase.

== Requirements ==
TBD

== Characteristics ==
TBD.
The larger ones and middle one should be newly developed.
There are some commercial products for smaller ones.

== Inspection plans ==
TBD

== Procurement process and plans ==
TBD


== Links ==
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=872|JGW-T1200872]]		  . Anywhere in the initial alignment phase.

Beam Profilers for large beams

Related subgroups: IOO, MIF, VAC

back to AOS top

Contents

  1. Beam Profilers for large beams
    1. Scope
    2. Current Status
    3. General Description
      1. Functions
      2. Locations

Scope

  • The Beam Profilers for large beams is to be used to check the beam mode (power spacial distribution) during the commissioning phase of the intereferometer.

Current Status

General Description

  • The mode matching is one of the important step to operate an optical cavity, and thus a beam profiler can help the commissioning phase.
  • For KAGRA, the beam size will become about 100 mm diameter.
  • There seems no commercial products that is able to measure such a large beam size so far, and we will develop such a tool.

Functions

  • Measuring a spatial distribution of intensities of a laser beam for 300 mm diameter.
  • Visualizing the measured data on site and remote in real time (live view).
  • Offering any other functions that are usually equipped in commercial beam profilers. (Fit-function of the measured data with Gaussian profile, Functions of statistical processing, Functions of exporting the measured data)

Locations

  • Anywhere in the initial alignment phase.

LCGT/subgroup/AOS/BeamModeProfiler1 (last edited 2012-09-16 20:37:26 by KiwamuIzumi)