Old 07-01-2013, 05:27 PM #1
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Default One maybe silly Question?

Iam in an deal to built a nice 2w+ 445 Blue laser.Iam not so much the kind of burning type of man..ok i will do it a lot of times but iam most a stronge & thick solid focusable beam exploring sky guy.So my question is...in DIY built 2.5w+ lazer...the lenses do the whole thick focusable beam job in the dark night??(i saw some videos and i loved some thick beams and said..ok thats the kind of beam i want.In this power i know that i will have all the burning benefits..but what about the beam?Thank you for every help you give me..


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Old 07-01-2013, 05:34 PM #2
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Default Re: One maybe silly Question?

what do you mean thick beam; 1 inch, 1/2 inch, 1/4 inch, 1/8 inch, 1/16 inch etc....... If it is focusable then you can adjust the beam width to your liking, HOWEVER the wider the beam the less intense (bright) it will be since your spreading that estimated 2W power over a larger area (width). when focused to inifinity it will look like this



Nice tight, intense beam that is probably 1/16in wide? never actually measured the beam since its a multi-mode diode and the beam profile is square to begin with.
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Old 07-01-2013, 05:49 PM #3
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Default Re: One maybe silly Question?

Lovely beams Livinloud!My DIY will have G2 lens..so does this affect the thickness of the beam??As iam in dealing for the device that i will built(i want to believe that i will be in good DIY modder hands for that device...).so.. when focused to inifinity i would like to enjoy myselfe seeing a thick beam..if i can adjust it it will be lovely that..thats cool..for about inches..me too i have never measured the beam..so as thickness as it can be without loosing the quality would be perfect..!I Hope iam not writing stupid things..its just that iam exciting for this built device to be born!


I Liked very mush your beams....!
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Old 07-01-2013, 05:59 PM #4
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Default Re: One maybe silly Question?

what DIY are you following. from the sounds of it, especially since your using a G2 lens, then yes it will be focusable, thus allowing you to adjust the beam width. the picture above is focused to infinity so thats what you can expect from your laser. the G2 doesnt change the focusing at all, just the amount of light that passes through the lens.
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Custom Titanium PL520- stable 80mW



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Old 07-01-2013, 06:39 PM #5
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Default Re: One maybe silly Question?

I used 70mm diameter photographic lens as beam expander one day for trying distant burning .. the losses were horrible, so it did not really work. But the beam ! Trust me, you don't want light saber, when you can have laser baseball bat ..
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Old 07-01-2013, 07:55 PM #6
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Default Re: One maybe silly Question?

Thanks for the help Livinloud.you have pm.
DrSid thanks for this information too.

The kit i will built is..
Model : Aurora Cree SH-032 , logo Aurora is present.
Wavelength : 445nm
Output diode : 2.5Watt
Output driver : 1780mA
Heatsink : copper
Lens : G2
Power supply : 2x 18350 Li-ion rechargeable battery
Duty cycle : 60sec on/off
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