Laser Diode by Thorlabs Inc

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The QD5263HH from Thorlabs Inc is a Continuous Wave Distributed Feedback Quantum Cascade Laser Diode operating at a wavelength of 5.263 µm. It works on a single longitudinal mode. This laser diode delivers an optical output power of 30 mW and has a Beam Divergence Angle (FWHM) of 6 mrad. This QD5263HH has a threshold current of 300 mA and an operating current of 1 A. It is available in a high heat load package (HHL), has a collimated output, and is able to provide temperature and electrical control via a standard HHL pinout. This laser diode is ideal for Chemical Analysis, Sensing, and IR Countermeasures.

Product Specifications View similar products

Product Details

  • Part Number
  • Manufacturer
    Thorlabs Inc
  • Description
    5.263 µm DFB Quantum Cascade Laser Diode for Sensing & Chemical Analysis Applications


  • Application
    Chemical Analysis, Sensing, IR Countermeasures.

General Parameters

  • Technology
    Distributed Feedback (DFB), Quantum well
  • Operation Mode
    CW Laser
  • Wavelength
    5.263 µm
  • Beam Quality Factor (M2)
    1 to 1.3
  • Output Power
    20 to 30 mW
  • Output Power
    20 to 30 mW
  • Operating Voltage
    12 V
  • Operating Current
    1000 mA
  • Operating Current
    1000 mA
  • Forward Voltage
    12 V
  • Reverse Voltage
    1 V
  • Threshold Current
    300 mA
  • Beam Divergence
    3 to 11 mrad (Parallel), 3 to 11 mrad (Perpendicular)
  • Beam Divergence Parallel
    3 to 11 mrad
  • Beam Divergence Perpendicular
    3 to 11 mrad
  • Laser Color
  • Package Type
  • Package
    HHL Package
  • Thermistor Resistance
    10 kOhms
  • Type
    Free Space Laser Diode
  • Note
    Beam Diameter: 0.5 to 2.5 mm

Physical Properties

  • Weight
    1.54 lbs
  • RoHS


  • Operating Temperature
    15 to 45 Degree C
  • Storage Temperature
    -40 to 85 Degree C

Technical Documents

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