I just wanted to share a new edition to my laser collection.
And its a big one, and it’s courtesy of Chris (Laser_Project).
I wanted this laser a few years back when I first saw it listed on eBay.
Unfortunately it never happened, firstly because Chris’s circumstance had changed,
and secondly I couldn’t honestly justify spending my university grant on a laser.
Well, to cut a long story short I got a message of Chris to say I had a parcel on it’s way.
Imagine my shock when it turned out to be this laser.
So I just want to take a time out on this thread and say thank you.
He not only sent me the laser but also went out of his way to assist me in receiving and powering up the unit. [image]
About the laser:
This is the MGL-W head from CNI, so it is a beast even before powering it on. These heads are fitted with a large heatsink and two internal fans to dissipate the heat away from the TEC cooled components. These heads are capable of handling 20W of 532nm comfortably. So thermal stability is no issue whatsoever. The head according to the spec sheet is 6.1kg in weight. I haven’t measured it myself, but I don’t doubt it for a second. For anyone wanting to learn more about the host.
Here is the PDF: http://www.cnilaser.net/PDF/MGL-W-532.pdf
The PSU is what appears to be a older/discontinued model of the FDA drivers.
It comes with a safety interlock, a key switch and an emergency stop button for safety purposes.
The PSU is only compatible with 110V, which at first presented a problem for me in the UK. Cyparagon had ways of getting around this, but 2000W transformer solved all my issues simply and effectively.
Now for the actual output.
First thing that comes to my mind. Bright!
Unless you’ve seen high power 532’s before, nothing can prepare you for the shear intensity of 4.25W of glorious green photons.
I have a 500mW 532 outputting close to 600mW, and I thought that was bright. I have 4W NUBM07’s, and 7W NUBM44’s and they don’t compare either.
It may not be my most powerful laser, but it is my brightest… by a long way. And the power burns anything it touches similar to a NUBM44, just slightly slower.
I managed to burn through gloss white laminate which was reflecting most of the light.
Just for fun I worked out the lux equivalent to sunlight (130,000 lux). The laser has a 5mm guassian dot and a divergence of 1.5mRad. So at 100mm from the aperture these are the values for the dot intensity. Luminous efficacy was fully counted into the equation and so was its true output of 4.25W.
Power Density: 40.81W/cm^2
Photopic Lux: 246,638,067.50 lux
Photopic Solar Equivalent: 1897.22x
Scotopic Lux: 541,769,487.04 lux
Scotopic Solar Equivalent: 4167.46x
These values might actually be higher, as I haven’t actually measured the beam diameter properly myself. The spec sheet states ~4mm. So taking this into account the intensity will be much greater than stated.
So, bright it is.
Here are some pics for you to enjoy.