801nm 650W CW Laser Diode Stack w/FAC, Water Cooled nLight Cascades
Water cooled, 650 watt CW, 801nm laser diode stack with FAC lenses. These modules contain a vertical stack of 7 100W water cooled 1cm wide bars, each with a fast axis correction (FAC) lens. The lenses collimate the fast axis so the output from the array is 7 stripes in a 10mm x 13mm area. These modules require cooling water and will be destroyed instantly if powered without flowing coolant. The specifications call for de-ionized (i.e non conductive) water and a 20um particle filter. We test these with clean, fresh distilled water with no problems. These are nLight Cascades series part number VSA7-650-0801-F or the II-VI / Oclaro equivalent Monsoon series part number MMO-801-650L. Originally made for use in Laserscope / AMS Greenlight HPS / XPS laser systems. These are intentionally off the peak absorption of 808nm in order to allow the pump light to be absorbed over the entire length of an end-pumped rod. Also great for materials processing such as heat treatment and welding with appropriate focusing optics.
We individually test each unit here so we can guarantee good water flow and electrical performance. Our testing is limited to 42.5A by the laser diode driver we're using. These typically produce ~150W at 42.5A. Note that the wavelength is closer to 795nm when under-driven. The spectral width is typically less than 4nm FWHM.
Clean cooling water is extremely important. Each diode bar has a micro-channel array for coolant flow directly below the die. If the micro-channels get blocked with particles, water flow will decrease and the module will rapidly overheat. When run at full power, the electrical draw is 114A @ 14.7V = 1676 watts. Less the 700W optical output leaves 976 watts of heat to dissipate. You'll need a chiller with a bare minimum 1000W cooling capacity and rated for at least 1.75 liters / minute flow.
We ship these on a special bracket that protects the lenses during handling. We have these module without FAC lenses in our store which are better suited for IR illumination.
Specifications:
- Output Power: 650W CW (after lenses)
- Wavelength: 801nm +/- 3nm
- Number of Bars: 7
- Bar Spacing:1.8mm
- Slow Axis Divergence: 10°
- Fast Axis Divergence: 0.25°
- Threshold Current: 23A
- Operating Current: 114A
- Slope Efficiency: 1.1 W/A
- Voltage per Bar: 2.1V
- Anode: Base / Cathode: Top
- Coolant: De-ionized water
- DI Resistivity: 0.25-0.5 MΩ - cm
- Particle Filter: <20μm
- Fluid Flow Rate: 200-250 ml/min per bar
- Max Fluid Pressure: 55 PSI
Note that these, like all the electrical components we sell, are listed with no returns allowed. They are individually tested and shipped in anti-static materials so we know they will arrive in good working condition. Laser diodes can be damaged by static electricity, reverse polarity, over-temperature, over-current, none of which is detectable without fully re-testing the unit. We will accept returns for laser diodes which are still in our original, sealed packaging. Once electrical components are opened, we can't accept returns.
Pictures and description Copyright 2023 Starlight Photonics
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.
Company Information
Starlight Photonics
PO Box 1134
Alviso, CA 95002
Payment
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Shipping
Most orders ship within 24 hours of payment. We take pride in our careful packing of delicate items. In the unlikely case that you receive an item which has been damaged in shipping, please hang on to the packing material and contact us. We will file a damage claim with the shipper and start the process of getting you a replacement or a refund.
Terms
Items we sell on eBay do not include any warranty unless otherwise specifically stated in the listing. We do guarantee that the items we sell will be delivered in the condition described in the listing. If you have a problem with your purchase, please get in touch and we'll do our best to resolve it.
Import duties, taxes, and other charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
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.
Returns
Most electronic items we sell may not be returned unless the package is unopened. Please read the listing carefully, do your research and ask us any questions you need to decide if the item is suitable for your use. All returns must include all of the original accessories, paperwork and packaging. Shipping charges are not refundable and opened packages will incur a fee to cover testing and restocking the item. Returns which are not resalable due to missing parts, damage, alteration, etc. will not be refunded.