445 nm 75 W High-Power Fiber-Coupled Blue Laser Diode

WAVELENGTH

445 nm

POWER

75 W

FIBER CORE

105 µm

NA

0.22

Key features

• 445 nm Blue Output
• Ultra-high 75 W Power
• High-Brightness 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 Production

Custom configurations & wavelengths available

Uncompromising performance

The 445 nm 75 W High Power Fiber Coupled Blue Laser is a specialized light source designed to overcome the limitations of standard infrared lasers in processing non-ferrous metals. Operating at the visible blue wavelength, this module provides the unrivaled energy absorption required for the high-quality welding of copper, gold, and aluminum—making it a critical component for EV battery production and power electronics. Delivering a robust 75 W of continuous-wave output through a high-brightness 105 µm core, the K445HR7FN series utilizes a multi-submodule architecture for superior thermal stability and beam quality. The system features an integrated 635 nm visible aiming beam for precise industrial targeting and a built-in 10 kΩ thermistor for real-time protection. With a high-power HP-SMA905 technical interface and an industrial-grade housing, this blue laser module provides the technical authority needed for advanced 3D printing (SLM), materials research, and high-precision industrial manufacturing.

SPECIFICATIONS ( 25°C ) SYMBOL UNIT K445HR7FN-75.00W
MINIMUM TYPICAL MAXIMUM
OPTICAL
DATA(1)
Total CW Output Power PT W 75
Number of Submodules pcs 2
Submodule CW Output Power Po W 38
Center Wavelength λc nm 445 ± 20
Spectral Width (FWHM) Δλ nm 6
Wavelength Shift / Temp Δλ/ΔT nm/°C 0.3
ELECTRICAL
DATA
Electrical-to-Optical Efficiency PE % 30
Threshold Current Ith A 0.35
Operating Current Iop A 3 3.5
Operating Voltage (Vop) Vop V 36 * 2 42 * 2
Power Supply Mode 2 Submodules
FIBER
DATA
Core Diameter Dcore μm 105
Numeric Aperture NA 0.22
Fiber Length Lf m 1
Fiber Termination HP-SMA905
MONITOR Thermistor / Wavelength Range Rt (KΩ)/β(25°C) 10 ± 3% / 3450
OTHERS ESD Vesd V 500
Storage Temperature(2) Tst °C -20 70
Operating Case Temp(3) Top °C 15 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

Get a formal quote

Consult with an Expert