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Old 09-13-2010, 06:11 AM #1
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Smile 445nm diode just question

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.



Last edited by diodelaser; 09-13-2010 at 06:43 AM.
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Old 09-13-2010, 06:13 AM #2
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Default Re: 445nm diode just question

Drlava's microboost with an 18650 battery would do the trick.

http://hacylon.case.edu/ebay/laser_d...BoostDrive.php
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Old 09-13-2010, 06:29 AM #3
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Default Re: 445nm diode just question

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Originally Posted by cd520 View Post
Drlava's microboost with an 18650 battery would do the trick.

http://hacylon.case.edu/ebay/laser_d...BoostDrive.php
Thank you so much an what would be the current number to give me the 1000mW.
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Old 09-13-2010, 06:31 AM #4
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Default Re: 445nm diode just question

Depends on the lens used. In the area of 1000-1200ma.
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Old 09-13-2010, 06:46 AM #5
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Default Re: 445nm diode just question

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Depends on the lens used. In the area of 1000-1200ma.
i would say the standard Aixiz acrylic lens. oh an would i be needing a heat sink or not, if so would you provide a link to it.
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Old 09-13-2010, 06:49 AM #6
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Default Re: 445nm diode just question

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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Old 09-13-2010, 07:22 AM #7
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Default Re: 445nm diode just question

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Originally Posted by cd520 View Post
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?
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)

Last edited by diodelaser; 09-13-2010 at 07:40 AM.
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Old 09-13-2010, 12:05 PM #8
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Default Re: 445nm diode just question

I was thinking of making a lab build. You could buy one from Modwerx: Lab style heatsink for 12mm laser modules - $20.99 : Modwerx Shop

A few people have been making lab heatsinks out of cpu heatsinks. They are awsome.

Yet another 445nm labby
Dorky Overkill Heatsink for 445nm

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Old 09-13-2010, 02:16 PM #9
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Default Re: 445nm diode just question

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.

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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Old 09-14-2010, 10:45 PM #10
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Default Re: 445nm diode just question

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Originally Posted by drevil View Post
I was thinking of making a lab build. You could buy one from Modwerx: Lab style heatsink for 12mm laser modules - $20.99 : Modwerx Shop

A few people have been making lab heatsinks out of cpu heatsinks. They are awsome.

Yet another 445nm labby
Dorky Overkill Heatsink for 445nm

thank you..... i will try the lab heat sink.
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Old 09-14-2010, 10:47 PM #11
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Default Re: 445nm diode just question

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Originally Posted by oic0 View Post
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.

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.
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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Old 09-15-2010, 12:10 AM #12
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Default Re: 445nm diode just question

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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.
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.
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Old 09-15-2010, 12:21 AM #13
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Default Re: 445nm diode just question

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.
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Old 09-15-2010, 08:33 AM #14
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Default Re: 445nm diode just question

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Originally Posted by Ash View Post
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.
well thanks a lot ill keep that in mind, about using a glass lens, only if the power is above 500mW.
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Old 09-15-2010, 08:36 AM #15
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Default Re: 445nm diode just question

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Originally Posted by Benm View Post
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.
Well thank you so much Benm.
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