808nm 70W Fiber-Coupled Semiconductor Laser (Model: K808DA5RN-70.00W)
The K808DA5RN-70.00W is a high-power 808nm fiber-coupled semiconductor (diode) laser from BWT, delivering 70W of output power through a 105μm core / 125μm cladding multimode fiber with 0.22 numerical aperture and an SMA905 connector. Housed in a compact, gold-plated industrial package with integrated mounting holes, it offers a typical electro-optical efficiency of 45%, a slope efficiency of 8W/A and built-in anti-reflection protection for the 1020nm~1200nm band (30dB isolation), making it highly reliable for pumping solid-state lasers (especially Nd:YAG/Nd:YVO4) as well as medical and material processing applications. Optional thermistor and photodiode (PD) monitoring pins are available for closed-loop temperature and power management.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Output Power | 70W(Min.) |
| Spectral Width (FWHM) | 6nm(Typ.) |
| Electro-Optical Conversion Efficiency | 45%(Typ.) |
| Threshold Current | 1.5A(Typ.) |
| Operating Voltage | 18V(Max.) |
| Slope Efficiency | 8W/A(Typ.) |
| Fiber Core Diameter | 105μm(Typ.) |
| Fiber Cladding Diameter | 125μm(Typ.) |
| Numerical Aperture | 0.22(Typ.) |
| Fiber Length | 2.0m(Typ.) |
| Fiber Jacket Diameter | 3.0mm(Typ.) |
| Fiber Bend Radius | 50mm(Min.) |
| Fiber Connector | SMA905 |
| Anti-Reflection Protection Band | 1020-1200nm |
| Anti-Reflection Isolation | 30dB(Typ.) |
| ESD Rating | 500V(Max.) |
| Storage Temperature | -20°C~70°C |
| Soldering Temperature | 260°C(Max.) |
| Soldering Time | 10sec(Max.) |
| Operating Temperature (Base Plate) | 15°C~35°C |
| Pin Assignment | Pin1: Laser(+); Pin2: Laser(-); Pin3: Thermistor*; Pin4: Thermistor*; Pin5: PD(N)*; Pin6: PD(P)* (*Optional) |
Applications
Key Features
Datasheet
Supplier Information
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