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hyparzero
Modified 10mW Greenie
Joined: 19 Aug 2005
Posts: 23
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 Posted: 9/03/05, 8:08 PM Post subject: Removing t |
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| Hello everyone, i was wondering if i remove the IR filter of a 95mW laser pointer, how much extra power is it likely to gain? can the experienced laser makers in this forum tell me the easiest way to remove the filter? i don't care about waranty. |
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Nexus
Wicked Lasers Master
Joined: 02 Jun 2005
Posts: 756
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| Posted: 9/03/05, 9:33 PM Post subject: |
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You wont gain any power, and you wont be able to burn anything better (however you will get 400-500mW of 808+1032nm wavelength) , i've tried it. It will only diverge the green laser beam into a flashlight / spotlight green light.
Best Regards |
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hyparzero
Modified 10mW Greenie
Joined: 19 Aug 2005
Posts: 23
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| Posted: 9/03/05, 9:44 PM Post subject: |
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| am i correct in saying that the IR filter is a green piece of glass? if i remove the filter, but leave the Lens in place, therefore i get a focused 532 nm of green light with high infrared output. is what i am saying correct? |
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Nexus
Wicked Lasers Master
Joined: 02 Jun 2005
Posts: 756
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| Posted: 9/03/05, 11:30 PM Post subject: |
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Thats correct.
Best Regards |
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hyparzero
Modified 10mW Greenie
Joined: 19 Aug 2005
Posts: 23
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| Posted: 9/03/05, 11:35 PM Post subject: |
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| but a green laser with a high infrared output should have more burning capabilities compared to one with low infrared output ?? |
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nero_design
Wicked Lasers God
Joined: 02 Sep 2005
Posts: 1463
Picture(s): 98
Movie(s): 1
Location: Australia
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| Posted: 9/04/05, 9:02 AM Post subject: IR laser r |
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I could be wrong here but I think the IR frequency is more harmful to human skin than visible wavelengths and definitely far more harmful to the tissue in the human retina. All the laserists I have spoken to express a strong desire to avoid removing the IR filter from their green lasers.
I once disassembled a cheap <5mW Leadlight laser pointer to see what it looked like and if I could salvage the contents... and I threw it straight into the trash because the IR filter came away. Too scary for me and that was the smallest output green pointer I could buy. The Wicked lasers appear to be filtered for the same safety reasons as a typical green pointer which is great to know. The filter blocks a lot of that harmful IR light and the green beam will let you know if it's reflecting back in your face. I know of a chap who lost an eye to a 15mw IR diode during a lab experiment and that was from a secondary-reflection on a table. He just couldn't see it. For this reason, I'd be more inclined to trust working with a <150mW green laser over a <10mW IR laser.
Visible lasers are much safer to work or even play with depending on their application and output. I can see very easily why it's tempting to get or modify a laser that might burn things with a higher output although I'm not certain that the IR wavelength is going to heat up anything much.... other than your eyeballs.
/Still too scary for me.
/Mods: I'm new here... feel free to crop this post if the content is unsuitable or inappropriate.
_________________
Regards,
Marco Nero
* Laser Gallery: http://www.pbase.com/nero_design/pro1wickedlasers
* Always use appropriate laser-safe eyewear when using higher powered lasers. |
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Steve0000
Wicked Lasers Master
Joined: 27 Aug 2005
Posts: 573
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| Posted: 9/04/05, 9:23 AM Post subject: |
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Removing the IR filter will have absolutely no affect on the divergence of the pointer's beam.
Yes it should be able to burn better but you'll have to optimally collimate the IR light but you need to be able to see the IR light to do so. For best results you may want to buy IR lenses and swap them with original ones. I removed the IR filter on my CNI pointer years ago I still have two working eyes,  just use good judgement. Doing this will turn your pointer into a mid range class 3b possibly class 4 laser device.
Did you know?
"It is important to note that extremely high power densities are achieved at the focal point of a concentrated laser beam. A 10-milliwatt beam focused to a diffraction-limited spot 0.22 micrometers in diameter results in a power density of approximately 30-million watts per square centimeter . Such high energy levels can rapidly degrade or destroy lens and filter coatings, as..."
[/url] <http://www.olympusfluoview.com/theory/confocallaserintro.html>
The rest of the text can be found about a quarter of the way down of the page. |
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flood6
25mW Classic Wicked Laser
Joined: 03 Aug 2005
Posts: 37
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| Posted: 9/06/05, 6:01 PM Post subject: just tweak |
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| lol tweak it remove the button and twist the screw with "A WATCH SCREWDRIVER" |
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nero_design
Wicked Lasers God
Joined: 02 Sep 2005
Posts: 1463
Picture(s): 98
Movie(s): 1
Location: Australia
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| Posted: 9/06/05, 8:49 PM Post subject: flood6 re: |
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| That method works on first generation Leadlight lasers. I think you'll find that the Wicked designs are a little different and that turning the Potentiometer is best suited to the cheaper brands that can be thrown away if you fail. The very reason I am purchasing from Wicked is because I want something OEM rather than hand cranked and prone to higher and lower power fluctuations. |
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