High Power Collimated 405nm UV Laser Diode Module Up to 1.5W Sharp GH04W10A2GC
These modules were extracted from high brightness laser phosphor video display units. Each module 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.
- Anamorphic correction lens
- 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 some sort of 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 partial 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 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. 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 if you'd prefer a tested, extracted diode ready to install in your own host.
Pictures and description Copyright © 2023 Starlight Photonics
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About Us
We are a small company located in the heart of Silicon Valley. We specialize in surplus lasers and photonics and have an optics lab with many instruments such as power meters, laser diode drivers and optical spectrum analyzers. Combined with our considerable expertise, this allows us to test most of the items we sell so you can be confident that they will arrive in good working condition.
FDA Disclaimer for Laser Components 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
PO Box 1134
Alviso, CA 95002