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Old 07-27-2010, 01:41 PM #1
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Default building 445nm blue laser

Hello, I have recently become interested in buying a more powerful laser from WL since their price drops. Well I eventually found some laser building tutorials on youtube and a few hours later I ended up here. I would like to build a good quality laser using this diode: HighTechDealZ - 445nm 1W (1000mW) Blue Brand New Laser Diode in Aixiz Module

First off, I would like to build a quality laser. I am not nuts about getting a 1 watt output with this laser. I have spent a few hours looking over some tutorials like the "I want to build a laser thread" and I am sort of lost. I would like to know what exact parts I need. Do I need a lens, heat sink ect...... Another thing is the driver, I don't know if i need to build one or buy a certain one. If someone could please help me or at least point me in the right direction that would be very helpful.


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Old 07-27-2010, 02:07 PM #2
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Default Re: building 445nm blue laser

First of all Welcome!!!

Another member has that avatar... you might want to change it to avoid confusion, but its up to you.

Ok, lets get started.... a laser diode, like the one you linked to are fragile electrical components that need regulated current to operate and prevent damage. Thus a driver is needed. There are 2 main types of drivers that can be used with laser diodes, a linear driver or a buck/boost driver. Depending on your input voltage will determine which type of driver you need. A buck/boost driver can convert low current and voltage to higher voltage therefore only requiring a small capacity low voltage power source, for example 1x AAA battery.

A linear driver on the other hand needs a high voltage source, usually the forward voltage of the diode + ~2v. This is handy when your host only takes three batteries. For example I am running the Rckstr (linear) driver off 3x 10440 3.7v batteries, this means they add up to ~12v at full charge... only a linear driver can utalise that kind of voltage.

But for smaller hosts where high voltages sources are not available a buck/boost driver will be used. For example in my own 445nm laser build I have flexdrive V5 and a 1x 18650 battery at 3.7v running a diode with forward voltage of ~4.4v at >1A. Can you see the benefit??

Now if you want to go with a kit, I highly suggest 2 hosts.... Either the 18650 host from Jayrob or the Tank007 from Flamingpyro. They both are great hosts and provide great heatsinking.

The exact components that you will need are listed below:

Diode: Can be bought at GB price for $45 or $59 on that website you listed above.
Aixiz module: Can also get a heat sink that is able to accept press fit diodes. ~$3
Heatsink/Host: ~$40-50
Glass lens: ~$10
Driver: flexdrive v5 $27 or Rckstr driver $13, alternatively you could build a LM317 driver for ~$3 but it will not be as compact as these drivers.
Batteries/charger: ~$15

Any other questions please feel free to PM me or post here! -Adrian
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Last edited by bobhaha; 07-27-2010 at 02:11 PM.
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Old 07-27-2010, 02:38 PM #3
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Default Re: building 445nm blue laser

thank you for the quick reply. This is very helpful. Also thank you for telling me about the avatar I can get rid of it.
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