High Power 405nm UV Laser Engine Assembly w/20 >1W Diode Modules, Optics. This deck is part of a laser phosphor video display unit. This assembly has twenty 405nm diodes modules with associated lenses and mirrors. This is made to produce a linear array of 20 beams very close to each other, but not in a single beam. This array was scanned with a Polygon Scanner and focused to a plane with an F-Theta lens.Those parts have been removed from these assemblies and are available in our other listings. The optics are all coated specifically for use at 405nm so the lenses are low loss and the mirrors are highly reflective. Each of the 20 diode modules includes. High-power, multi-mode 405nm laser diode. Molded glass aspheric collimating lens likely made by Geltech®, similar to the popular G-2.
AR coated glass block that can be rotated by a tiny stepper motor to shift the beam left/right by a few mm. The laser diode is in a standard 5.6mm can which has been pressed into a copper heat spreader.
The diode leads are isolated from the case and the polarity is shown in one of the pictures. The diode can be easily removed by bending the soft copper heat spreader. The GH04W10A2GC is conservatively rated for 350mW CW and 1100mW pulsed but is quite capable of being overdriven. We test each unit - briefly at 1250mA to make sure it has lots of headroom and again at 1000mA to check the operating power. These diodes are guaranteed to produce 1.5W or better at a maximum of 1.1A drive current.
The chart also shows a typical 16X Blu-ray diode performance for comparison. The wavelength shifts up to 410-412nm when ran at 1.5W.
There is a driver board on the back of the module, but I have not fully figured it out and recommend using an external driver suitable for producing 1.1A with a diode compliance voltage of 5.0V. Driver pinout provided on request. The collimating lens is AR coated specifically for 405nm so it is extremely low-loss.
It is glued into the module and pre-collimated. If you want to remove it for use in another type of module, just heat up the epoxy with a hot air gun and press it out with something soft like a q-tip. You can see the extracted lens in the last picture. The anamorphic lens corrects the multi-mode output from a 25mm x 4mm stripe at 10 meters to a 25mm diameter round spot at 10 m (see pictures).
This works out to a divergence of about 2.5mrad. The beam exiting the module is about 4 x 1 mm so suitable for knife-edge combining.
This does not make as tight a beam as a single-mode diode, but the circularized beam should focus down to a small, round spot for cutting and etching applications. We include a small focusing lens which is AR405 so very low loss. These should also be ideal for UV cured resin-based 3D printers. The final stage of optics is an easily removable block of AR coated glass that can be rotated with a tiny, built-in stepper motor.
This allows the beam to be offset a few mm left or right without changing the aiming. This might be ideal for knife-edge combining.The last picture shows one of the modules fully disassembled. Check out other listings for individual modules and extracted laser diodes. We take pride in our careful packing of delicate items. We will not falsify export documentation. PO Box 1134 Alviso, CA 95002. The item "High Power 405nm UV Laser Engine Assembly with20 1W Diode Modules, Optics" is in sale since Monday, July 8, 2019.
This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Lab Lasers\Diode Lasers". The seller is "starlight-photonics" and is located in Alviso, California. This item can be shipped worldwide.