878 nm 90 W Wavelength-Stabilized Fiber Coupled Laser Diode

WAVELENGTH

878 nm

POWER

90 W

FIBER CORE

200 µm or 400 µm

NA

0.22

Key features

• High-Intensity 90 W Output
• VBG Wavelength Stabilization (± 1 nm)
• Narrow Spectral Width (0.5 nm)
• Integrated 30 dB Feedback Protection
• SMA905 or Fiber Termination
• Rugged Industrial Package

Applications

• Solid-state laser pumping (Nd:YAG, Nd:YVO4)
• Selective Heat Treatment
Material processing
• Kilowatt-class Fiber Laser Seeding
• Scientific and defense research
• Custom OEM integration

Custom configurations & wavelengths available

Uncompromising performance

The 878 nm 90 W High Power Fiber Coupled Diode Laser is a precision pump source designed for high-performance Nd:YVO4 and Nd:YAG solid-state laser systems. Utilizing integrated Volume Bragg Grating (VBG) technology, this module provides an ultra-stable 878 nm ± 1 nm center wavelength, ensuring perfect spectral overlap with the gain medium’s narrow absorption bands regardless of operating conditions. Delivering 90 W of continuous-wave output, the K878 series offers exceptional energy density and a superior 50% electrical-to-optical conversion efficiency, which drastically reduces system cooling requirements. For industrial reliability, the module features integrated 30 dB feedback isolation, protecting the diode from back-reflections during high-power operation. Built with a rugged package and standard SMA905 termination, this module is the technical authority for scientific research, medical laser systems, and industrial materials processing.

SPECIFICATIONS ( 25°C ) SYMBOL UNIT K878BA5RN-90.00W
MINIMUM TYPICAL MAXIMUM
OPTICAL
DATA(1)
CW Output Power Po W 90
Center Wavelength λc nm 878.6 ± 1
Spectral Width (FWHM) Δλ nm 0.5
Wavelength Shift / Temp Δλ/ΔT nm/°C 0.03
ELECTRICAL
DATA
Electrical-to-Optical Efficiency PE % 50
Threshold Current Ith A 1.5
Operating Current Iop A 11.5 14
Operating Voltage Vop V 14.6 17
Slope Efficiency η W/A 9
FIBER
DATA
Core Diameter Dcore μm 200 / 400
Cladding Diameter Dclad μm 220 / 440
Numeric Aperture NA 0.22
Fiber Length Lf m 1.5
Minimum Bending Radius mm 88 / 176
Fiber Termination SMA905 or Fiber
FEEDBACK
ISOLATION
Wavelength Range nm 1020 ~ 1200
Isolation dB 30
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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