"Best" Pen laser?

mortuus said:

color is more on the green what ive seen forest green some call it ,the beam on 520 is a bit thicker since its diode then 532 lasers, and its TE00 if not mistaken not TEM00.

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TE00? I have never heard of that before.

Tha Greenlander said:

Here is an excellent video showing the difference between 520nm & 532nm:

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Thanks for the video, the 532nm looks quite a bit better to me

jimdt7 said:

520nm is more of a forest green for sure! I'll try to get some pics for ya when it get's dark here! Single-Mode diode lasers tend to have better divergence but worse beam diameter than DPSS ones! :beer:

EDIT: Here is a picture of the dot 8.5meters away from the laser while focused to infinity. Beam diameter at that point about 5mm! :beer:


Have a nice day,
Jim

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The dot doesn't look very clean is that normal? Whats the beam diameter at the aperture? Could you measure the divergence again? Because .49mRad doesn't sound legit, maybe try at farther distances? How much do you want for it? Would you be open to a trade? And lastly if you could take pictures with a ruler and proof of distance that would make me feel a lot better about it.

offroadfreak8582 said:

If would go for for a laserbtb pen. But then again that is all that i have experience with! Cost wise you cant go wrong. Also take 100mW version. It is much more stable.

Or, you take a sinner copper pen. Like the one i built in my 445nm. And drop in a dpss module. (I have some fasttech's that are suprisingly consisten in divergence and power. They would especially be in the copper host.

Greetings,

Robin

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Again, been there done that. I got the 150mW version in one of your group buys. If I remember correctly the beam was quite thick and/or the divergence was average or less than average which is not what I am looking for. As for the copper pen, I am looking for something pre-built and tested. What I am really looking for is a CNI GLP or DL Viper, something along those lines.

Blord is selling some really nice pen lasers at the moment but they are 2w and 445 :/ but if you want to buy one you should probably do it now before they are gone.

Tha Greenlander said:

Here is an excellent video showing the difference between 520nm & 532nm:

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Thank you for the compliment ^^


Here's also a difference shot

Created a sale thread here! http://laserpointerforums.com/f39/fs-pl520-ms-envy-host-89836.html :beer:
BTW I remeasured the divergence (Beam diameter at 4.3meters is 3mm and 5mm at 8.3meters) which gives as 0.49mRad once again...if you search the forum you'll see that many members get ~0.5mRad divergence...! :beer:

Have a nice day,
Jim

How does the divergence of the PL520 compare to the PLP520? And how much heat do they produce? (i.e. would they be suitable for a pen host)

brendon7358 said:

How does the divergence of the PL520 compare to the PLP520? And how much heat do they produce? (i.e. would they be suitable for a pen host)

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Solely based on the fact that the PLP520 is multi-mode and is rated for 120mW, I would say that the PL520 (single-mode) has better divergence + produces less heat! :beer:

Jim