MFL-3500 Compact Widely Tunable mid-IR Fiber Laser


The MFL-3500 is the first compact, turn-key mid infrared fibre laser. Based on the highly efficient, patented dual wavelength pumping technology, the MFL-3500 outputs up to 1 W of continuous power from a single-mode fibre, delivering reliable mid infrared light to wherever it is needed. An automated grating allows an ultra wide tunability of up to 450 nm around 3.5 μm, enabling tuning to a variety of molecular absorption lines such as various greenhouse gases and proteins.

The MFL-3500 comes with built-in wireless remote control of all laser parameters via an app, giving you the freedom to easily control the laser from anywhere in the lab. The MFL-3500 is a simple, turn-key solution that can be readily incorporated into any experiment requiring mid-Infrared light.

  • Efficient 3.5 μm output via patented dual-wavelength pumping
  • High output power of up to 1 W (for fixed wavelength)
  • Wide tunabilityof greater than 450 nm
  • Reliable and robust single-mode fibre construction
  • Built-in wireless remote control via app
Maximum power @ 3.5 μm band 1W (fixed wavelength)
Wavelength range 3.33–3.78μm
Typical linewidth 0.3nm
Beam quality TEM00 M2< 1.1
Power stability 0.4%
Duty cycle 1-100%
Polarization Linear (30:1)

Unpolarised (fixed wavelength)

Dimensions 45 x 45x 53 cm3

Key Features


  • Mid-IR spectroscopy
  • Greenhouse gas sensing
  • Atmospheric laser radar
  • Molecular fingerprinting
  • Polymer processing


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