Laser Diode by Sheaumann Laser | Visit website

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The CMC-940-4000-2 from Sheaumann Laser is a Continuous Wave Laser Diode that operates at a wavelength of 940 nm. It delivers an output power of 4 W and has a slope efficiency of 1 W/A. This multi-mode laser diode has a beam divergence of 30 degrees (vertical far-field) & 8 degrees (horizontal far-field) at FWHM. It requires a threshold current of 500 mA and DC voltage of 1.7 V. This laser diode consumes 4.5 A of current and dissipates 4 W of power. It has a 200 µm emitter and an optional microlens. This laser diode is available in a Cu submount package with ultra-low & high AR coating options and is ideal for defense, laser pumping, laser therapy, medical, and Raman spectroscopy applications.

Product Specifications

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Product Details

  • Part Number
  • Manufacturer
    Sheaumann Laser
  • Description
    940 nm CW Laser Diode for Medical & Raman Spectroscopy Applications


  • Application
    Raman Spectroscopy, Laser Therapy, Laser Pumping, Medical, Defense

General Parameters

  • Configuration
  • Operation Mode
    CW Laser
  • Wavelength
    940 nm
  • Output Power
    4 W
  • Output Power
    4 W
  • Operating Voltage
    1.7 to 2.2 V
  • Operating Current
    4.5 to 5 A
  • Operating Current
    4.5 to 5 A
  • Emitter Width
    200 µm
  • Threshold Current :
    500 to 800 mA
  • Beam Divergence
    8 Degrees (Parallel), 30 Degrees (Perpendicular)
  • Beam Divergence Parallel
    8 Degrees
  • Beam Divergence Perpendicular
    30 Degrees
  • Laser Color
  • Slope Efficiency
    1 W/A
  • Package Type
  • Type
    Free Space Laser Diode


  • Operating Temperature
    -20 to 50 Degree C

Technical Documents

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