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Old 09-22-2015, 11:39 AM #17
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Default Re: Will this aluminum heatsink be enough?

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Originally Posted by GSS View Post
A little off the cuff, but would putting a laser in front of a fan after use cool it down any quicker and would it cause some damage from not letting it cool the way its supposed to?
Yes it should cool a little faster, it depends on the design of the laser, ideally the fan should blow directly on the heat sink. No it can't cause any damage. Fans are used in lab lasers, there have been one or two hand helds here that had a built in fan.

Alan


__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter


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Old 09-22-2015, 11:56 AM #18
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Default Re: Will this aluminum heatsink be enough?

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Originally Posted by Pi R Squared View Post
Yes it should cool a little faster, it depends on the design of the laser, ideally the fan should blow directly on the heat sink. No it can't cause any damage. Fans are used in lab lasers, there have been one or two hand helds here that had a built in fan.

Alan
Thanks Pi, I know that lasers well labbys are fan cooled but the fans prevent them from reaching the heat that needs to be cooled, just wanted to hear if helping it cool down was bad. Im going to play with some of my cheap higher output ebay pens with the fan. So again good to know I do remember seeing some fan cooled hand held laser on someones build, pretty " cool "

Last edited by GSS; 09-22-2015 at 12:25 PM.
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Old 09-22-2015, 07:30 PM #19
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Default Re: Will this aluminum heatsink be enough?

Quote:
Originally Posted by Pi R Squared View Post
Yes it should cool a little faster, it depends on the design of the laser, ideally the fan should blow directly on the heat sink. No it can't cause any damage. Fans are used in lab lasers, there have been one or two hand helds here that had a built in fan.

Alan
I know this is a bit out of context but from going down powerful lasers I've seen on youtube and in general I've never seen any 445nm that's over 6W from a single diode why is this so? is advancement going really slow or there's no demand for higher outputs? (Note: i know IR 40W lasers exists but im interested in the 445nm ones)

Thanks!
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Old 09-22-2015, 07:44 PM #20
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Default Re: Will this aluminum heatsink be enough?

Quote:
Originally Posted by Pluxx View Post
I know this is a bit out of context but from going down powerful lasers I've seen on youtube and in general I've never seen any 445nm that's over 6W from a single diode why is this so? is advancement going really slow or there's no demand for higher outputs? (Note: i know IR 40W lasers exists but im interested in the 445nm ones)

Thanks!
Yes I think it's a combination of the two, but mostly no demand I would think, they are mostly used in projectors, I am not sure what scientific or industrial uses they have if any at all. Right now as far as I know the most powerful 445nm can do 7W or a little more.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter


Everyone please post here: Countries of LPF. Where are you? <link>
___________________________________________
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