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FrozenGate by Avery

445nm diode just question

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diodelaser

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Jul 28, 2010
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i just have some question about the 445nm i know i could use the Rkcstr Micro-Drive Laser Diode Driver an only would give me like 300mW an for that driver what would be the recommended battery. or those any body else know where i could buy a good driver that would give the 1000mW power, an what battery would I be using. well thanks in advance.
 
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Do not use the acrylic lense at that power it will degrade. Use a glass lense. Yes you need a heatsink. Are you going to make this a flashlight host or lab style laser?
 
cd520 said:
Do not use the acrylic lense at that power it will degrade. Use a glass lense. Yes you need a heatsink. Are you going to make this a flashlight host or lab style laser?
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Ok thank you for your answer an im not to sure what style, but i would say lab style. so you said just one battery (18650)
 
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Probably the best portable driver available for it right now is the Flexdrive V5. Its good for 750-1000mw out of the box, up to 1500+ if you can keep it cool cranked that high. If you are making a lab build though, you don't have to use such a compact driver, you have a lot more options.
:lasergun:
Acrylic lens will melt and the fumes will cloud up your diode window pretty much making your diode irreversibly suck. 405 / 445 glass is $10 shipped, no reason at all to ever use acrylic.
 
oic0 said:
Probably the best portable driver available for it right now is the Flexdrive V5. Its good for 750-1000mw out of the box, up to 1500+ if you can keep it cool cranked that high. If you are making a lab build though, you don't have to use such a compact driver, you have a lot more options.
:lasergun:
Acrylic lens will melt and the fumes will cloud up your diode window pretty much making your diode irreversibly suck. 405 / 445 glass is $10 shipped, no reason at all to ever use acrylic.
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well thank you so much..... how about the red laser 20X LPC will i need a glass lens for it too.
 
diodelaser said:
well thank you so much..... how about the red laser 20X LPC will i need a glass lens for it too.
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You will want to use a glass lens for any laser that is over ~500mW.
For the 20x red, you will only be able to get it to about 250mW-300mW IIRC. So, you don't need a glass lens for it, but you will get slightly more power if you do use glass. :p
 
Well, the glass lens gives a better beam profile for the red diodes, and might be worth it just for that. There is a bit of gain in power too, but its not that huge.

When you're building a lab style, just take a good driver, omamp based designs instead of things that are built to be compact and sacrifice performance for that.

Also, where the 445 diodes are concerned: most people want to run those in the order of 1 amp. If your driver needs to drop even one volt of current overall, its gonna dissipate one watt, and it will need a bit of cooling. If you are powering one from 2 lithium cells, the dissipation would likely be 2 watts or a bit more, and cooling the driver becomes a concern.

Its not a good idea to package all of that into an aixiz module or similarly small space: The laser diode and driver will produce 7 watts of heat combined, and you must consider heatsinking requirements for that before even beginning to build something.
 
Ash said:
You will want to use a glass lens for any laser that is over ~500mW.
For the 20x red, you will only be able to get it to about 250mW-300mW IIRC. So, you don't need a glass lens for it, but you will get slightly more power if you do use glass. :p
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well thanks a lot ill keep that in mind, about using a glass lens, only if the power is above 500mW.
 
Benm said:
Well, the glass lens gives a better beam profile for the red diodes, and might be worth it just for that. There is a bit of gain in power too, but its not that huge.

When you're building a lab style, just take a good driver, omamp based designs instead of things that are built to be compact and sacrifice performance for that.

Also, where the 445 diodes are concerned: most people want to run those in the order of 1 amp. If your driver needs to drop even one volt of current overall, its gonna dissipate one watt, and it will need a bit of cooling. If you are powering one from 2 lithium cells, the dissipation would likely be 2 watts or a bit more, and cooling the driver becomes a concern.

Its not a good idea to package all of that into an aixiz module or similarly small space: The laser diode and driver will produce 7 watts of heat combined, and you must consider heatsinking requirements for that before even beginning to build something.
Click to expand...
Well thank you so much Benm.
 
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