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915nm, 10W Laser Diode; 105µm Fiber Pigtail; SMA Termination

  • 10W Laser Top View
  • 10W Laser Diode from Lumentum

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sku / item#: L4-9891510-100M
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Key Features
  • 10 Watts of Output Power for Doped Fiber Pumping
  • 915nm Center Wavelength (also available at 940nm)
  • 105 μm Core Fiber, NA = 0.22
  • 1 Meter Fiber with SMA Fiber Optic Connector

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MODEL L4-9891510-100M
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  • Center Wavelength: 915 nm
  • Optical Output Power: 10 Watts
  • Typical Mean Wavelength at 25 °C: 917 nm
  • Spectral Width (FWHM): 3 nm
  • Conversion Efficiency: 48%
  • Wavelength Tolerance: 905 nm ~ 928 nm
  • Wavelength Tuning vs. Temperature: 0.35 nm/°C
  • Wavelength Tuning vs. Output Power: 1.0 nm/W
  • Typical Operation Current: 12 Amps
  • Maximum Operation Current: 13 Amps
  • Typical Threshold Current: 0.7 Amps
  • Maximum Operating Voltage: 2.2 Volts
Fiber Characteristics
  • Fiber core diameter: 105 μm
  • Fiber numerical aperture 0.22 NA
  • Fiber cladding: 125 μm
  • Fiber buffer: 250 μm
  • Fiber length: 1 meter
  • Fiber Optic Connector: SMA
  • Fiber laser pumping
  • Material processing
  • Graphic arts
  • Medical
  • Remote power generation
  • Pyrotechnic ignition

Product Overview:

915nm L4 Laser Diode Module from Lumentum

These 915nm multimode pump laser diode modules from Lumentum are offered in a fiber coupled, high reliability L4 package.

Continuous Design Evolution Delivers A Highly Reliable Device

These L4-Series are a high-tech evolution of the very successful L2 and L3 devices, and offer a high output power of up to 10 Watts from a small footprint fiber coupled package. They ship with an SMA connector and a 1 meter fiber pigtail. A key to their long life and long term reliability is a simplified thermal management architecture which is achieved by distributing the diodes (heat sources). This facilitates the use of water or air cooling of the package. These devices were designed to be cost effective pumps for the multi-mode pump market.

Key applications include fiber laser pumping, materials processing and graphic arts.

Heat Sinking for Lumentum L4 Packaged High Power Pumps
The L4-9894010-100M package was designed to allow the use of either air cooling or water cooled thermal management. As with all laser diodes, device degradation accelerates with increased temperature. The case temperature should be actively controlled and kept in a safe operating temperature window. A proper heat sink for the diode laser on a thermal radiator will greatly enhance the life of the laser.

Laser Lab Source offers a pre-configured heat sink which has been optimized for the L4 package. It comes pre-drilled with the correct mounting hole placement and has a TEC based cooling plate with a small fan to remove the waste heat. In addition to the mount, the current source and TEC controller unit which is compatible with the 10W laser is also available. Please contact us for more information on controlling and cooling high power Lumentum laser diodes.

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