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Old 04-25-2017, 07:07 AM #1
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Lightbulb 301 Laser Output Test by LPM

Laser Power Meter is the only way to check laser output. you can't tell any differences from 50mw to 100mw.

301 laser is the most popular laser style in the market, price is different, from $10 - $20. now let's check it out. pls note this video is only for those lasers. it doesn't mean your laser on hand has similar output, even though they have exactly same host.

seems i can't insert a youtube here, so here is the link:
https://youtu.be/u34oLAmV_kY


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Old 04-25-2017, 07:29 AM #2
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Default Re: 301 Laser Output Test by LPM

the 301 green one is a little bit unstable. some can be up to 98mw, but some are low.
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Old 04-25-2017, 09:08 AM #3
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Default Re: 301 Laser Output Test by LPM

Here you go tommy.


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Old 04-25-2017, 09:16 AM #4
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Default Re: 301 Laser Output Test by LPM

thank you BowtieGuy. so i just need to past the last few codes of the url. i've learned that skill now
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Old 04-25-2017, 09:21 AM #5
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Default Re: 301 Laser Output Test by LPM

You're welcome.
Yes that's all you need, then insert it between the YouTube symbols.
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Old 04-25-2017, 09:22 AM #6
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Default Re: 301 Laser Output Test by LPM

i think i should write the test result here for someone who dont have enough time to finish the video.

the result is:
405nm violet: 112mw
450nm blue: 1.2 watt
532nm green (2 lasers ): 80mw and 68mw
650nm red: 200mw
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Old 04-25-2017, 01:19 PM #7
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Default Re: 301 Laser Output Test by LPM

Heres some info from a review and subsequent testing I did on a 301 laser:

Review: Aurabuy 301 100 mW 532 *PIC HEAVY*

This was the IR output from the same laser ie a large proportion of the output is IR and most 301s dont have an IR filter:

532 Collimated IR output

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Old 04-26-2017, 02:12 AM #8
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Default Re: 301 Laser Output Test by LPM

great review grainde. i wish i have that LPM to check the IR output.
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Old 04-26-2017, 06:39 AM #9
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Default Re: 301 Laser Output Test by LPM

You dont need a special LPM to measure the IR, yours will do fine. You just need an IR filter. If you have an old web cam you can take it apart and remove the "blueish" filter before or after the lens - depends on the camera. Put this in the path of the beam before it hits the LPM and you will get a lower output reading, if IR was present.

Edit: Or get something like this: http://www.ebay.com/itm/2PCs-Optical...-/182133249593 It has 95 % transmission in the visible, but only 1 % in the near IR from 700 - 1050 nm. Even if the transmission is slightly higher at 1064 nm (the lasing wavelength of the Nd:Yag crystal before the doubler) it will probably still be enough to block almost all of the light.

Alternatively you could try this one it transmits 2 % at 1064: http://www.ebay.com/itm/2pcs-25mm-Co...oAAOSwVcFXOrkA To be honest though I think it will be exactly the same as the filter above
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100mW 405 PHR
700mW 405

2W 445 C6--link--
+2.3W 445 --link--
+2.5W 445 --link--

190mW 450 --link--
15mW 510nm
5mW 532 --link--
25mW 532 --link--

520mW 638 --link--
1W 638

250mW 650
250mW 780

3000 Lm C8 MTG2 @ 6 A!
Poppas mod 3A --link--
Sipik 98 Cu pill/star mod --link--

Last edited by grainde; 04-26-2017 at 06:53 AM.
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