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Unable to focus

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Hi all, I am a newbie to laser field. Currently I am doing a laser based engraving project for my university course where I have to use the laser to engrave words on woods.

I have did some research and bought a LPC-826 laser diode alongside with a module for 5.6mm diameter.

After installing the laser diode into the module and tested with a laser driver circuit I build on my own and began the testing it seems that the laser beam produced is not focused AT ALL.



I am wondering whether did I broke my laser diode or the lens is not good. I learnt to install the diode through some of the youtube video so I don't think it's the installation process error. Any guidance will be appreciated.

Thanks in advance.
 

offroadfreak8582

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Oct 14, 2011
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To me it seems like you lens or your diode window is dirty.

Try checking if those are clean. The smallest dusts and dirt can have a very big effect.

If they are both clean your diode may be gone. But first things first :)

Greetings,,
 




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