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Entry  Thu Aug 1 03:34:35 2013, Chloe, DailyProgress, ECDL, Assembling ECDL 
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                Reply  Wed Aug 7 18:13:21 2013, Chloe, DailyProgress, ECDL, Assembling ECDL 
                   Reply  Thu Aug 8 18:43:44 2013, Chloe, DailyProgress, ECDL, Assembling ECDL 100_0081.JPGcool_bridge.PNGheat_bridge.PNG
                      Reply  Fri Aug 9 18:01:47 2013, Chloe, DailyProgress, ECDL, Assembling ECDL cool_bridge2.PNGheat_bridge2.PNG
                         Reply  Tue Aug 13 18:13:35 2013, Chloe, DailyProgress, ECDL, Assembling ECDL 
                            Reply  Thu Aug 15 18:53:45 2013, Chloe, DailyProgress, ECDL, Assembling ECDL 100_0104.JPG
Message ID: 1297     Entry time: Tue Aug 13 18:13:35 2013     In reply to: 1292     Reply to this: 1299
Author: Chloe 
Type: DailyProgress 
Category: ECDL 
Subject: Assembling ECDL 

Made some modifications to the Solidworks design. All of these have been changed on the SVN. 

  • Made heat sink for TEC adjustable so it can clamp the TEC element between the heat sink and the laser diode mount, with no risk of it touching the laser diode mount. This was achieved by making a longer hole on the base plate so the heat sink can be screwed on anywhere. The heat sink will be copper because this is very thermally conductive compared to aluminum or other metals. 
  • The laser diode will be thermally isolated from the rest of the setup using a piece of plastic (most likely delrin). 
  • Tara and I found a lens mount we can use which allows for small height adjustments (Newport LA1V-XY, http://search.newport.com/?x2=sku&q2=LA1V-XY). This is at an optic height of 1 inch which works well with our setup. We are going to purchase this (http://search.newport.com/?q=*&x2=sku&q2=LPLH-25T) which is an adapter so that it can hold the 0.25" optic. The collimating lens' distance from the laser diode will be adjustable by the same method as the heat sink - there is a longer hole on the base plate so that the lens mount can be screwed down anywhere. 
  • Added 2 D-sub holes that are properly sized (last time was a bit too small) so that we can plug in the TEC and current driver onto the ECDL box. 

Tomorrow morning I will go to the machine shop to get the base plate and left plate modified, and get them to machine a heat sink and plastic insulator. 

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