40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  TCS elog  Not logged in ELOG logo
Message ID: 150     Entry time: Thu May 26 11:56:46 2011
Author: Aidan 
Type: Electronics 
Category: Laser 
Subject: Green Laser Pointer beam profile 

This measurement was made with the Thorlabs DCC1545M-GL camera with an RG850 3mm long-pass filter over the CCD.

The beam radius (w) is 191 pixels, where the beam intensity = exp[-2 (x/w)^2 ]

The pixel size is 5.2um. Hence the beam size is 993.2um, which is basically near enough to 1mm radius.


Attachment 1: green_laser_pointer.bmp  1.251 MB
Attachment 2: green_laser_pointer.pdf  16 kB  Uploaded Thu May 26 13:17:38 2011  | Hide | Hide all
Attachment 3: Screen_shot_2011-05-26_at_12.28.20_PM.png  30 kB  Uploaded Thu May 26 13:30:30 2011  | Hide | Hide all
ELOG V3.1.3-