40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
 List  |  Find  |  Login  |  Help 
Entry  Tue Oct 21 16:14:42 2008, steve, Update, General, divergence of He Ne 1035P 1035p_divergence.png
    Reply  Wed Oct 22 17:48:58 2008, Yoichi, Update, General, Lenses for focusing the optical lever laser (Re:divergence of He Ne 1035P) BeamProfile.pngBeamPropagation.pngBeamPropagation.zip
Message ID: 1062     Entry time: Tue Oct 21 16:14:42 2008     Reply to this: 1069
Author: steve 
Type: Update 
Category: General 
Subject: divergence of He Ne 1035P 
The ITM oplevs laser diodes are noisy.
They will be replaced by JDS 1035P
SN T8093307 was measured with the beamscanner.
This will able us to calculate the right lenses to get a small beam on the qpd.

** 
The first column is distance from the front face of the laser in cm.
The second column is beam diameter in the horizontal direction in microns.
The third column is the beam diameter in the vertical direction in microns.
(edit by Rana)
Attachment 1: 1035p_divergence.png  39 kB  Uploaded Wed Oct 22 13:49:36 2008  | Hide | Hide all
1035p_divergence.png
ELOG V3.1.3-