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How to mount a microlens?

  1. Aug 14, 2010 #1
    Dear All,

    I would like to use a cylinder microlens for fast-axis collimation of a laser diode beam. The length of the lens is 1.06 mm and its diameter is 0.5 mm.
    3145.jpg

    its working distance is 0.06 mm. How to mount the microlens in the front of the laser facet?

    I want to use a needle with the lens attached to its end. Any better ideas please?

    thank you





    PS: I am posting this question in the Physics forum, because physicist frequently use lenses and microlenses.
     
  2. jcsd
  3. Aug 14, 2010 #2

    Andy Resnick

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    If I understand how you are using the lens, it's tricky using cylinders because of the additional degree of freedom. There are a couple of mounts that may work:

    http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=718
    http://search.newport.com/count/24/i/1/nav/1/q2/Opto-Mechanics/q3/Lens%2520Mounts/q4/LABasix/q5/%2524100%2520-%2520%2524200/q6/Adjustable%2520Cylindrical%2520Lens%2520Mount/x2/section/x3/chapter/x4/promo_nonprice/x5/curr.pricerange/x6/family [Broken]

    But the trick is going to be able to accommodate the size and positioning of the optic relative to the diode. You may have to home-brew a mount (like a slot machined through a disc) and stick that into a proper optomechanical mount.
     
    Last edited by a moderator: May 4, 2017
  4. Aug 14, 2010 #3
    these mounts look too big for the lens.

    I like this idea. I can easily etch a trench through a disk using a focused ion beam system. Such kind of mount can also protect the lens and the laser from mechanical damage.
    thank you very much
     
    Last edited by a moderator: May 4, 2017
  5. Dec 31, 2010 #4
    Hi,

    there is another approach of fixing a micro lens on virtually any surface. That is femtosecond laser two-photon polymerization process, where you get optical quality lenses with refractive indices of 1.4-1.6 .

    Examples:
    http://www.wophotonics.com/en/Micro-optics
     
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