445 nm 250 W High-Power Fiber-Coupled Blue Laser Diode

WAVELENGTH

445 nm

POWER

250 W

FIBER CORE

105 µm

NA

0.22

Key features

• High-Brightness 445 nm Blue Output
• Industrial 250 W Total Output
• 0.15 Numerical Aperture
• Narrow 105 µm Fiber Core
• Integrated Visible Aiming Beam
• High-Power HP-SMA905 Termination
• Advanced Thermal Management

Applications

• Non-Ferrous Metal Welding
• Additive Manufacturing (3D Printing)
• Scientific Research
• Industrial Coating & Cladding
• EV Battery Manufacturing

Custom configurations & wavelengths available

Uncompromising performance

The 445 nm 250 W High Power Fiber Coupled Blue Laser is an ultra-high-output visible light source engineered to solve the “reflectivity barrier” in industrial manufacturing. While standard infrared lasers struggle with non-ferrous metals, this blue laser module provides the unrivaled energy absorption required for high-speed, spatter-free welding of copper, gold, and aluminum—making it the essential core for EV battery production and power electronics. Delivering a massive 250 W of continuous-wave output through a high-brightness 105 µm core, the K445 series utilizes an advanced four-submodule architecture to ensure absolute spectral stability and power consistency. Built for 24/7 heavy industrial environments, this water-cooled system features integrated thermal tracking and a 635 nm visible aiming beam for precise alignment. Terminated with a rugged HP-SMA905 interface, it represents the technical standard for high-power additive manufacturing (SLM), metal cladding, and advanced scientific research.

SPECIFICATIONS ( 20°C ) SYMBOL UNIT K445HR6FN-250.0W
MINIMUM TYPICAL MAXIMUM
OPTICAL
DATA(1)
Total CW Output Power Po W 250
Center Wavelength λc nm 445 ± 20
Spectral Width (FWHM) Δλ nm 6
Wavelength Shift / Temp Δλ/ΔT nm/°C 0.1
Sub-module Count pcs 4
ELECTRICAL
DATA
Electrical-to-Optical Efficiency PE % 30
Threshold Current Ith A 0.35
Operating Current (single module) Iop A 3.5 3.8
Operating Voltage (single module) Vop V 52 60
FIBER
DATA
Core Diameter Dcore μm 105
Numeric Aperture NA 0.22
Fiber Length Lf m 2.0
Fiber Termination HP-SMA905
THERMAL &
OTHERS
Cooling Method Water Cooling
Cooling Capacity W ≥500
Cooling Water Temperature T °C 20 ± 5
Water Discharge L/min 7
COMPONENTS Thermistor (Resistance) Rt K Ω 10 ± 3%
OTHERS ESD Vesd V 500
Storage Temperature(2) Tst °C -20 70
Operating Case Temp(3) Top °C 20 30
Relative Humidity RH % 15 75

Do you need a custom laser diode for your application?

We offer custom laser diodes according to your needs, either high-power or low-power versions, fiber-coupled or free-space, specific wavelengths, wavelength-stabilized options, and single or multi-emitter diodes. To discuss your custom laser diode needs, you can contact us by sending an email or using the contact form.

contact@ephotonics.com

+1 418 883 7125

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