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488nm Laser Diode, 20mW Output
PM Fiber-Coupled Coaxial Package

  • Laser Diode 488nm 20mW
  • 488nm 20mW laser diode dimensions
  • 488nm PMF laser diode output power

sku / item#: RLS / 488NM-20MW-PMF
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Key Features
  • 488 nm Center Wavelength
  • Polarization Maintaining Fiber, NA 0.12
  • FC/APC Connector
  • Coaxial Package with Mounting Bracket
  • Offered by Wavespectrum Laser, Inc., a Laser Lab Source Marketplace Seller
  • Sold & Supported in North America by: LaserDiodeSource.com, part of the
    Laser Lab Source Marketplace Group

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PRICE $960.00
  • Center Wavelength: 488 nm ±10 nm
  • Output Power: 20 mW
  • Wavelength Temperature Coefficient: 0.05 nm/°C
  • Spectral Width (FWHM): 2.0 nm
  • Beam Type: Gaussian
  • Polarization Extinction Ratio: 15 dB
ELECTRICAL Specifications at 25°C
  • Operating Current: 140 mA
  • Threshold Current: 35 mA
  • Operating Voltage: 6.5 V
Package and Fiber Specifications
  • Coaxial Package with Mounting Bracket
  • Fiber Type: Polarization Maintaining
  • Fiber Connector: FC/APC
  • Slow Axis Aligned to the Key of the FC Connector
  • Fiber Core Diameter: 3 μm
  • Fiber NA: 0.12

Product Overview:

488 nm, 20 mW Laser Diode Overview

This laser diode is offered in a polarization maintaining fiber-coupled package and terminated with an FC/APC connector. The TO-can packaged 488 nm laser is mounted into a coaxial header and precisely coupled to the fiber pigtail output. The coaxial package is installed in a mounting bracket that also serves as an additional layer of heat sinking to keep the integrated source thermally stabilized. The mounting bracket allows the user to bolt the package to a heat sink to dissipate waste heat away from the internal laser diode. The fiber pigtail has a 900 micron loose tube jacket to allow the user to position the fiber without damaging the PM fiber. Other fiber and connector options are available; inquire for options and details.

Important Notes on Operating Laser Diodes
Electrical Operation: Operating a laser diode above the maximum ratings shown on the data sheet even for very short periods of time can damage the laser diode or reduce its lifetime. They should be electrically biased with a "laser diode driver" class current supply with low electrical noise and protection against voltage and current surges. Laser diodes are very sensitive to electrostatic discharge (ESD). Proper ESD precautions must be taken.

Mounting and Temperature Control: In order to maintain the lifetime of a laser diode, proper heat management is essential. Due to the design of the laser diode, heat is typically dissipated only through the base plate of the diode‘s package. A proper heat conducting interconnection between the diodes base plate and the heat sink must be maintained. Some devices require the use of a thermo-electric temperature controller (TEC controller) to remove the heat from the laser and stabilize the temperature.

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