High Power 405nm UV Laser Engine Deck w/20 ~1W Sharp GH04W10A2GC Diode Modules

Description

High Power 405nm UV Laser Engine Deck w/20 ~1W Sharp GH04W10A2GC Diode Modules
High Power 405nm UV Laser Engine Deck w/20 ~1W Sharp GH04W10A2GC Diode Modules
This deck was part of a laser phosphor video display unit. This assembly has twenty 405nm laser diode modules with associated lenses and mirrors. The optics train produces a linear array of 20 beams very close to each other, but
not in a single beam
. This array of beams was raster 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:
Sharp GH04W10A2GC multi-mode 405nm laser diode pressed into a copper heat spreader
Glass aspheric collimating lens, similar to the popular G-2 and AR coated for extremely low loss at 405 nm.
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. These are multimode lasers which are rated for 350mW CW and 1100mW pulsed, but are 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 410-412 nm when run at 1.5W.
There is a driver board on the back of the module, but it has an unusual interface so you will need to replace that with your own laser diode driver suitable for producing 1A with a diode compliance voltage of 5.0V. We don't stock this sort of driver, but they are easy to find from other sellers on eBay. Board pinout and reverse engineered schematic will be provided to buyers 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 warm 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 final optic 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 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.
Pictures and description Copyright © 2020 Starlight Photonics, Inc.
Starlight Photonics Policies
FDA Disclaimer for Laser Items
This product is sold solely for use as a component (or replacement) in an electronic product; therefore it is not required to, and does not comply with, 21 CFR 1040.10 and 1040.11 which pertain to complete laser products. The manufacturer of the complete system-level electronic product is responsible for complying with 21 CFR 1040.10 and 1040.11 and for providing the user with all necessary safety warnings and information.
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Company Information
Starlight Photonics, Inc.
PO Box 1134
Alviso, CA 95002