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What is a good divergence?

Emialias

Emialias

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just recently i found an online divergence calculator and i decided it would be cool to measure its divergence :)
so after the setup i found that my basic green laser has a divergence of exactly 1.2303143398648593 mRad, or more simply 1.2 mRad :p
so is this a good divergence? if not, what is?
Edit: oh hey look, 30th post :D
 
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diachi

diachi

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Merpie101 said:
just recently i found an online divergence calculator and i decided it would be cool to measure its divergence :)
so after the setup i found that my basic green laser has a divergence of exactly 1.2303143398648593 mRad, or more simply 1.2 mRad :p
so is this a good divergence? if not, what is?
Edit: oh hey look, 30th post :D
Click to expand...


That's a fairly reasonable divergence IMO, but 'good' is subjective. Someone else might think that isn't good divergence, they might think 0.5mRad is good.
 
Pman

Pman

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I would consider the standard for "good" would be most single modes. In general 532nm have good divergence too. I suppose if you don't need a 3 element lens for correction you are in the good range.
 
Gabe

Gabe

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My 473nm Pl-E Pro gave me a divergence measurement of 0.5mRad, which is the lowest I've ever had. I'd consider 1.2mRad and less to be good.
 
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