40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Thu Oct 3 12:08:47 2019, gautam, Update, General, Make the Jenne-laser setup fiber-coupled PDFR_tabletop.pdfIMG_8014.JPG
    Reply  Thu Oct 3 14:32:37 2019, rana, Update, General, Make the Jenne-laser setup fiber-coupled 
       Reply  Thu Oct 3 14:54:33 2019, Koji, Update, General, Make the Jenne-laser setup fiber-coupled 
          Reply  Thu Oct 3 21:05:04 2019, aaron, Update, General, Make the Jenne-laser setup fiber-coupled PD_response.pdf
             Reply  Thu Oct 3 23:15:39 2019, Koji, Update, General, Make the Jenne-laser setup fiber-coupled 
             Reply  Fri Oct 4 00:30:31 2019, gautam, Update, General, Make the Jenne-laser setup fiber-coupled 
                Reply  Fri Oct 4 14:25:59 2019, aaron, Update, General, Make the Jenne-laser setup fiber-coupled PD_norm.pdfPD_AB.pdfJenneAM_fiberPD_cals.pdf
Message ID: 14930     Entry time: Thu Oct 3 12:08:47 2019     Reply to this: 14931
Author: gautam 
Type: Update 
Category: General 
Subject: Make the Jenne-laser setup fiber-coupled 

I propose the following re-organization of the PDFR measurement breadboard. We have all the parts on hand, just needs ~30mins of setup work and some characterization afterwards. The fiber beamsplitter will not be PM, but for this measurement, I don't think that matters (the patch fiber from the diode laser head isn't PM anyways). We have one spare 1 GHz BW NF1611 that is fiber coupled (used to live on the ITMY in-air table, and is (conveniently) labelled "REF DET", but I'm not sure what the function of this was). In any case, we have at least 1 free-space NF1611 photodiode available as well. I suggest confirming that the FC version works as expected by calibrating against the free space PD first.

Update 245pm: Implemented, see Attachment #2. Aaron is testing it now, and will post the characterization results.

Attachment 1: PDFR_tabletop.pdf  105 kB  Uploaded Thu Oct 3 16:00:42 2019  | Hide | Hide all
PDFR_tabletop.pdf
Attachment 2: IMG_8014.JPG  1.950 MB  Uploaded Thu Oct 3 16:01:22 2019  | Hide | Hide all
IMG_8014.JPG
ELOG V3.1.3-