From: pcdhSpamMeSenseless@electrooptical.net   
      
   On 8/10/2014 7:04 PM, ggherold@gmail.com wrote:   
   > On Thursday, August 7, 2014 10:58:35 AM UTC-4, Phil Hobbs wrote:   
   >> On 08/06/2014 11:08 PM, michael.r.sabino@gmail.com wrote:   
   >>   
   >>> Can someone give some tips on the construction of a Fabry-P�rot   
   >>   
   >>> etalon? I know I need two silvered mirrors with the silvered side on   
   >>   
   >>> the edge. Where do I find such mirrors commercially in small volume?   
   >>   
   >>> Also, what is a good method for tuning the distance between mirror   
   >>   
   >>> plates while keeping it fairly accurate? Can I use a metal bracket   
   >>   
   >>> with screws to adjust the distance? Is there an easy way to network   
   >>   
   >>> the screws so they adjust all sides of the plate distance at once?   
   >>   
   >>>   
   >>   
   >>> Your help would be much appreciated..   
   >>   
   >>>   
   >>   
   >>> Michael Sabino   
   >>   
   >>>   
   >>   
   >>   
   >> Fabry-Perots are quite a bit harder to make than that.  What are you   
   >> trying to do, exactly?   
   >   
   > Well, if you have a tunable laser, then some mirrors and lens tubes is   
   enough.   
      
   At sufficiently low finesse, sure.  The problem is that the finesse is   
   limited to about 1/(2*epsilon), where epsilon is the surface error in   
   waves.  Your average lambda/10 surfaces will get you a maximum finesse   
   of about 5.   
      
   Cheers   
      
   Phil Hobbs   
      
      
      
   --   
   Dr Philip C D Hobbs   
   Principal Consultant   
   ElectroOptical Innovations LLC   
   Optics, Electro-optics, Photonics, Analog Electronics   
      
   160 North State Road #203   
   Briarcliff Manor NY 10510   
      
   hobbs at electrooptical dot net   
   http://electrooptical.net   
      
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