On Thursday, June 20, 2019 at 9:03:51 AM UTC-4, Mikko OH2HVJ wrote:   
   > Hi,   
   >   
   > We're using some 1.3-1.7um telco laser diodes for measurements and 5.6mm   
   to-can   
   > versions are becoming obsolete.   
   >   
   > There are still suitable diodes with integrated fiber coupling lens,   
   > which have focus at 7.5mm from the base. The coupled power may be   
   > specified, but that's about it.   
   >   
   > I'm a bit worried about stray light in the measurement and the focus   
   > seems to have plenty of stray light when viewed with IR card.   
   > I could put a pinhole at the focus, but that's again additional   
   > mechanics and manufacturing steps.   
   >   
   > Does anybody have experience in this kind of diodes and their focus   
   > quality ?   
   >   
   > --   
   > mikko   
      
   Hi Mikko, You mean a laser diode pigtailed into a fiber.   
   https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1489   
      
   Do you need a lot of them, or just a few for testing?  Maybe   
   just buy a bunch before they go eol?   
      
   George H.   
      
   --- SoupGate-Win32 v1.05   
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