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Thread: Mixed single and multimode

  1. #11
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    I am planning on trying that with my 462s. I want to spatially filter them to a SM-like beam. I bought them for the color, not the power. I would love to see some of the 462 SM diodes hit the market. They are listed on the Nichia page but no one is selling them surplus.
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  2. #12
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    yes single mode 462!

  3. #13
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    I built a 445 for someone a while back. Power was not the main concern. I used a 4mm collimator on a 1 watt 445 and expanded the crap out of it with prisms. Then I put a round 3mm aperture block after the prisms. Worked great to match up with a quad of 660.

    Technically, I think the power density at the facet on the SM blue and greens is about the same as the larger 1-2W diodes. i believe this is why you don't see modules made with stacked SM blue or greens to achieve higher brightness like the reds.
    Last edited by logsquared; 11-25-2014 at 14:01.

  4. #14
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    Nice but unless they are 500mw its not worth stacking them. I see no point in stacking 6 when you can have the same beam with 1 multimode and corrective optics.


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  5. #15
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    Has anyone done a SM module with a pair of each wavelength via a cube?
    Chris, could you use a pair of your single mode mounts via a single broadband cube?
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  6. #16
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    Quote Originally Posted by edison View Post
    Nice but unless they are 500mw its not worth stacking them. I see no point in stacking 6 when you can have the same beam with 1 multimode and corrective optics.
    Exactly. I should have said I did that with a 1 watt diode. I'll just go edit it.

  7. #17
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    120mw 520 green isn't single mode
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  8. #18
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    Quote Originally Posted by norty303 View Post
    Chris, could you use a pair of your single mode mounts via a single broadband cube?
    I dont see why not. Actually, I have a BB cube around here somewhere. I could put it in front of my SM projector at both orientations and see what happens. Exchanging the reds to 170mW diodes and the greens to 120mw would be killer doubled through a cube.

    120mw 520 green isn't single mode
    but the emitter is so tiny it looks like one for our purposes.

  9. #19
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    Quote Originally Posted by kecked View Post
    yes single mode 462!
    Actually, the Nichia site shows 473nm SM diodes, which I would love. I just don't know of anyone selling them.

    http://www.nichia.co.jp/specificatio.../NDA4116-E.pdf
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  10. #20
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    I dont see why not. Actually, I have a BB cube around here somewhere. I could put it in front of my SM projector at both orientations and see what happens.
    I would imagine that if the SM diodes are well polarised, it'd only take a bit of rotation to orient them all the same way in each mount. I reckon that'd be such a nice and simple and compact way of getting 2 of each wavelength into a tight space.
    Could you even mount one block on top of the other,and have it go via a mirror and down into the cube? Really small footprint then.
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    You are using Bonetti's defense against me, ah?

    I thought it fitting, considering the rocky terrain.

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