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Old 09-23-2016, 08:25 PM #1
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Post What is a good divergence?

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


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Last edited by Merpie101; 09-23-2016 at 08:27 PM. Reason: 30th post kek
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Old 09-23-2016, 08:34 PM #2
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Default Re: What is a good divergence?

Quote:
Originally Posted by Merpie101 View Post
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

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.
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Old 09-23-2016, 08:53 PM #3
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Default Re: What is a good divergence?

0.0mRad

-Alex
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Old 09-23-2016, 09:05 PM #4
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Default Re: What is a good divergence?

Quote:
Originally Posted by Hap View Post
0.0mRad

-Alex

If only, eh?
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Old 09-23-2016, 09:52 PM #5
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Default Re: What is a good divergence?

For a dpss green imo it's good.
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Old 09-24-2016, 11:33 AM #6
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Default Re: What is a good divergence?

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.
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Old 09-24-2016, 11:54 PM #7
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Default Re: What is a good divergence?

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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Old 09-25-2016, 09:03 PM #8
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Default Re: What is a good divergence?

Ditto 1.2 and less
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Old 09-26-2016, 08:27 AM #9
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Default Re: What is a good divergence?

Yes I have also found <1.2 mRad to be a exceptable divergence.

Quote:
Originally Posted by Hap View Post
0.0mRad

-Alex
Quote:
Originally Posted by diachi View Post
If only, eh?
Lol, this would be amazing and dangerous. A NUBM44 would be setting things on fire on distant planets.
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