Differences between revisions 13 and 16 (spanning 3 versions)
⇤ ← Revision 13 as of 2012-03-04 17:29:10 →
Size: 1278
Editor: TomotadaAkutsu
Comment:
← Revision 16 as of 2012-06-18 20:14:20 → ⇥
Size: 1145
Editor: TomotadaAkutsu
Comment:
Deletions are marked like this. Additions are marked like this.
Line 10: Line 10:
== Applicable Documents ==
TBD		 == Current Status ==
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=872|JGW-T1200872]]
Line 14: Line 14:
The mode matching is one of the important step to construct an optical cavity. For KAGAR, the beam size will become about 10cm diameter, The mode matching is one of the important step to construct an optical cavity. For KAGRA, the beam size will become about 10cm diameter,
Line 19: Line 19:
 * Measuring a spatial distribution of intensities of a laser beam.
 * Fitting the intensity distribution with theoretical Gaussian profile.
 * Average, Data extraction, etc, anything that are usually equipped to a usual beam profiler...
  * Measuring a spatial distribution of intensities of a laser beam for XX cm 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. (fitting the intensity distribution with theoretical Gaussian profile, statistical processing and extracting the measured data)
Line 25: Line 24:

== 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]]

Beam Profilers for large beams

Related subgroups: IOO, MIF, VAC

..Up

Contents

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

Scope

The scope of Beam Profilers for large beams is to check the beam mode during the phase of initial alignment of optics.

Current Status

General Description

The mode matching is one of the important step to construct an optical cavity. For KAGRA, the beam size will become about 10cm diameter, while there seems no commercial products that is able to measure such a large beam size. Thus we should develop such tool.

Functions

  • Measuring a spatial distribution of intensities of a laser beam for XX cm 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. (fitting the intensity distribution with theoretical Gaussian profile, statistical processing and extracting the measured data)

Locations

Anywhere in the initial alignment phase.

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