1W 520nm Nichia Laser Diode TEST

[lasertack]

Hi guys,

Today my 1W 520nm Nichia diode arrived. An amazing piece of green

As you can see the pins are not placed in the center which makes it a bit tricky to mount with standard brass mounts where the pin hole at the backplate is placed in the center but it works.

For all tests I used an aspheric lens with an NA=0,53 and FL=4,6mm
As correction optics I´ve chosen anamorphic prisms and set them up for 2x mangification.

Without correction the beam at the output is a little bit tighter as of the 1,6W 445nm diode. The threshold current is about 300mA. I´ve only driven it to 1W behind the lens @ 1600mA. According to the datasheet the max. current is 1,8A but there is no operation current given. So I did not drive it above. Another reason is that I only got 1pc.

Pictures tell more than words. So.....

20140116_135203.jpg 20140116_135352.jpg 20140116_135532.jpg 20140116_142034.jpg

Wavelength @ 320mA.JPG Wavelength @ 1600mA.JPG Divergence (uncorrected).JPG Divergence (corrected).JPG

Wavelength @ 1600mA.JPG 1W 520nm Profile (uncorreted).JPG 1W 520nm Profile (corrected).JPG 350mA.JPG

500mA.JPG 700mA.JPG 1000mA.JPG 1200mA.JPG

1400mA.JPG 1600mA.JPG 20140116_144720.jpg

[mccarrot]

Thank you very much for posting these results. Much appreciated. This proofs the diode is a perfect replacement for a DPSS green.


Maurice.

[badger1666]

awesome news thanks for posting , look forward now to the prices dropping to <$200

[lasertack]

will take some months or maybe a year. the mass production will start by the end of March.

[masterpj]

Looks great but the diodes are too expensive so far. Not sure but how great does the orange and yellow look with this diode?

[laserlackey]

lasertack, I love you I've been looking for this info for a while now, as the specs sheets I've seen surface for this diode have been lackluster at best.

Also, PM incoming about the pin placement.

[MIIKKKLLLL]

If I understand your measurement, it is possible to have a 3.5mm beam width and 0.6mrad of divergence? (with a x4 magnification)

What is the height of the beam at the output?


Next step : set the temperature at 0°C and try @t 2500mA .

Thanks for sharing

[lasertack]

I dont know what the best possible result is. I had to do it quick for my customer. Had not much time to play with. It´s up to you to put it into liquid nitrogen and shoot 100A through it

Could be a nice experiment. Maybe I need to visit my old university

[RGB LASER VERKOOP]

here are some pictures with 800mW output on my 1w 520 diode's ( safly)
DSC_0432.JPGDSC_0484.JPGDSC_0484.JPG1.JPG3.JPG
more on my facebook.
ps. i love the colours!
this projector is a beamshow projector with uncorrected green and bleu diode I-shape and correcte 638nm
i bring it to the LEM saterday

[lasertack]

Nice to see them performing in a projector.