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Old 09-20-2016, 09:30 AM #1
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Default New IR laser, need some help

Hello everybody, I need to build an host for this:
CW Laser diode (CWLD) L9418-42 | Hamamatsu Photonics

but I never built any laser and I need to know what to do, as I understood I need a driver, but then? and which one?
Preferably it will be powered with a power supply and not a battery, because I need hours of continuous usage for study purpose.

I accept every hint and suggestions


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Old 09-20-2016, 10:31 AM #2
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Default Re: New IR laser, need some help

http://www.laserfocusworld.com/artic...r-s-guide.html

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Old 09-21-2016, 02:37 AM #3
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Default Re: New IR laser, need some help

Just get a standard 3.3V >2A power brick and a ~2.7ohm 5W power resistor to limit the current. A driver isn't really needed for a low power mains-supplied setup. You'll need a case with a lens and a heat sink as well.
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Old 09-21-2016, 07:21 AM #4
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Default Re: New IR laser, need some help

Quote:
Originally Posted by Cyparagon View Post
Just get a standard 3.3V >2A power brick and a ~2.7ohm 5W power resistor to limit the current. A driver isn't really needed for a low power mains-supplied setup. You'll need a case with a lens and a heat sink as well.
Thank you, I red that I need something prevent overvoltage in case of fluctuations, is it not required? And where I can find a case and an heat sink? I know that hand light are usually used as case but as I don't need portability is it better to find something else? Also I know that usually the continuous use is discouraged but as I need to power it for hours do I need a really big heat sink?
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