Old 02-06-2014, 08:20 PM #1
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Default How good is this laser?

Stats from the shop
Wavelength 808nm
Burning effect: It can burn black matches and black plastic balloons.
1 x Powerful 808nm Focusable IR Infrared Laser Pointer
My question:
Can it burn a paper?
Do it Necessary to use goggles with this laser?
thanks ahead!



Last edited by nmlaser; 02-06-2014 at 08:21 PM.
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Old 02-06-2014, 09:19 PM #2
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Default Re: How good is this laser?

Welcome to LPF.

If you meant to post a link to the laser, it didn't come through. To answer your questions:

1) It will burn things if powerful enough and/or focused to a point. My 1W 808nm does well on most cardboard and black paper, but does poorly on white. Also, some things apparently scatter or reflect IR while still appearing bright in visible light; there is one box my 1W 808nm will not touch at all no matter how tightly it's focused.

2) Yes, it is much more important to use the correct safety goggles with an IR laser. Since you can barely see the dot (and cannot see the beam at all), the laser appears to be very dim and low power, when in fact it is the exact opposite. Note that your safety goggles must be specifically rated for 808nm and/or NIR radiation or else the goggles will not protect you at all. If your goggles aren't rated for 808nm your eyes will be in danger as if the goggles were not even there. Be careful and double check the protection wavelength ratings!

Please consider obtaining a visible light laser if you want to burn. I cannot recommend an IR laser as a burner for the reasons outlined above. The 1.5 to 2.5 watt blue lasers will burn better than most 808nm handhelds. It will appear extremely bright so you will know when the beam is on, unlike IR lasers. Safety glasses rated for blue light are common and inexpensive. The blue laser diodes themselves are common and thus inexpensive. Lastly, if you have a forum member build you that laser, it will be a very high-quality Western build, not a cheap Chinese piece of crap. It might even cost you less than the Chinese lasers. It is something to consider.

Good luck and please protect your (and others') eyes!
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632nm : Metrologic ML-868 <5mW - Uniphase 155ASL-1 HeNe 0.95mW
543nm : Melles-Griot 05-LGR-193-497 HeNe 2.4mW
532nm : SkyLaser HL532 w/ IR filter 200mW - Fasttech SD-301 120mW - Lazerer LZCS 105mW - Laser 301 custom mod 85mW - various Laser 301's
520nm : [C6] Osram PL520 110mW - SkyLaser HL520 50mW
450nm : [C6] Osram PL450 260mW - Lazerer LZCS 145mW - SkyLaser HL450 95mW - SkyLaser LP450 90mW
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Old 02-07-2014, 07:26 AM #3
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Default Re: How good is this laser?

Quote:
Originally Posted by Marco Polo View Post
Welcome to LPF.

If you meant to post a link to the laser, it didn't come through. To answer your questions:

1) It will burn things if powerful enough and/or focused to a point. My 1W 808nm does well on most cardboard and black paper, but does poorly on white. Also, some things apparently scatter or reflect IR while still appearing bright in visible light; there is one box my 1W 808nm will not touch at all no matter how tightly it's focused.

2) Yes, it is much more important to use the correct safety goggles with an IR laser. Since you can barely see the dot (and cannot see the beam at all), the laser appears to be very dim and low power, when in fact it is the exact opposite. Note that your safety goggles must be specifically rated for 808nm and/or NIR radiation or else the goggles will not protect you at all. If your goggles aren't rated for 808nm your eyes will be in danger as if the goggles were not even there. Be careful and double check the protection wavelength ratings!

Please consider obtaining a visible light laser if you want to burn. I cannot recommend an IR laser as a burner for the reasons outlined above. The 1.5 to 2.5 watt blue lasers will burn better than most 808nm handhelds. It will appear extremely bright so you will know when the beam is on, unlike IR lasers. Safety glasses rated for blue light are common and inexpensive. The blue laser diodes themselves are common and thus inexpensive. Lastly, if you have a forum member build you that laser, it will be a very high-quality Western build, not a cheap Chinese piece of crap. It might even cost you less than the Chinese lasers. It is something to consider.

Good luck and please protect your (and others') eyes!
Thanks bro! I will use the laser only with goggles and not around people
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