Alien Laser 488nm Build!

[Alien Laser]

Sharp 488nm GH04850B2G New Build !

 

[ManCave]

That beam is gorgeous!
Well done my man!... one of these days (read, in a few years ) I hope to build a laser as good as yours.
Cheers!

 

[paul1598419]

Did you have the wavelength of that diode measured? I have quite a bit of experience with these diodes and if you can tell me the current you drive it with I can give you an approximate power level. Looks like you used a longer focal length lens as the beam diameter at the aperture is larger than most.

 

[Alien Laser]

Its set at around 75mA ( 5mA +/- )

 

[paul1598419]

Oh, why so low? Mine is set at 275 mA. Or is that a typo? If not, that is just about 2X threshold.

 

[Alien Laser]

I set it low so the wavelength don't change much i have another set at 130mA ( 5mA +/- ) and i can see a difference in wavelength i take some pictures tomorrow

 

[BowtieGuy]

Those are a couple of beautiful lasers fit for an Alien; good job, and thanks for sharing!

 

[ManCave]

Did you build the host yoursel?

 

[paul1598419]

I set it low so the wavelength don't change much i have another set at 130mA ( 5mA +/- ) and i can see a difference in wavelength i take some pictures tomorrow

These diodes tend to measure between 487nm and 493nm, so you can get a difference in its color depending on its wavelength. But, these diodes don''t tend to shift much by current. They do with heat, so a good heat sink is the most important if you want to keep the WL stable.