969 nm 140 W Wavelength-Stabilized Fiber Coupled Laser Diode

WAVELENGTH

969 nm

POWER

140 W

FIBER CORE

105 µm

NA

0.22

Key features

• Wavelength Stabilized (± 1 nm)
• Advanced Thermal Tracking
• Superior Electrical Efficiency
• Integrated 30 dB Feedback Protection
• Ultra-High Brightness 105 µm Core
• Rugged Industrial Package

Applications

• Fiber laser pumping
• Solid-state laser Pumping
Laser soldering
Laser plastic welding
• Scientific and defense research
• Custom OEM integration

Custom configurations & wavelengths available

Uncompromising performance

The 969 nm 140 W Wavelength-Stabilized Fiber Coupled Diode Laser is a high-power, technical-grade light source optimized for specialized scientific research and high-performance fiber laser pumping. By utilizing integrated Volume Bragg Grating (VBG) technology, this module maintains a precise 969 nm ± 1 nm center wavelength, providing the spectral locking necessary for peak absorption in narrow-band gain media. Delivering a robust 140 W of continuous-wave output through a high-precision 105 µm core, the K969BN1RN series offers exceptional energy density and beam quality. For high-power operational safety, it is equipped with integrated 30 dB feedback isolation, protecting the diode from harmful back-reflections in the 1020 nm–1200 nm range. Built for seamless industrial integration with FC-Ferrule termination and real-time thermal tracking, this module provides the uncompromising reliability required for advanced materials processing and directed energy systems.

SPECIFICATIONS ( 25°C ) SYMBOL UNIT K969BN1RN-140.0W
MINIMUM TYPICAL MAXIMUM
OPTICAL
DATA(1)
CW Output Power Po W 140.0
Center Wavelength λc nm 969 ± 1
Spectral Width (FWHM) Δλ nm 0.7 1.0
Wavelength Shift / Temp Δλ/ΔT nm/°C 0.03
Wavelength Locking Range A (Iop – 2A) ~ Iop @ 25°C
ELECTRICAL
DATA
Electrical-to-Optical Efficiency PE % 45
Threshold Current Ith A 1.0
Operating Current Iop A 13.0 15.0
Operating Voltage Vop V 22.5 25.0
Slope Efficiency η W/A 11.0
FIBER
DATA
Core Diameter Dcore μm 105
Cladding Diameter Dclad μm 125
Numeric Aperture NA 0.22
Fiber Length Lf m 2
Fiber Termination FC-Ferrule
FEEDBACK
ISOLATION
Wavelength Range nm 1020 ~ 1200
Isolation dB 30
OTHERS ESD Vesd V 500
Storage Temperature(2) Tst °C -20 70
Lead Soldering Temp Tis °C 260
Operating Case Temp(3) Ttop °C 25
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