YLMO 520
Femtosecond Fiber Laser



Advanced Features and Benefits   

  • Dual color output 520 nm & 1040 nm
  • Arbitrary splitting ratios possible
  • Compact Laser Head
  • Short femtosecond pulses <150 fs
  • Reliable operation due to figure 9® mode locking and all-PM solution
  YLMO 520
Central Wavelength  520 nm ± 5 nm
Pulse Width (FWHM) < 150 fs (Gaussian)
Average Power* > 500 mW (higher output power on request)
Pulse Energy >5 nJ
Repetition Rate* 100 MHz
Output Port freespace
Polarization linear, s-polarized
Beam Divergence < 2 mrad
Beam Quality M² <1.2 (typ. <1.1)
Auxilary Output Port** Free space, > 4 W average power, 1040 nm, <100 fs

*Please inquire for your specific combinations of average output power, pulse duration, repetition rate
** User can switch between 520 nm and 1040 nm port (arbitrary splitting ratios possible).


The YLMO 520 is based on a frequency-doubled ytterbium doped femtosecond fiber laser (YLMO). The system delivers more than 500 mW of average output power at 520 nm, with pulse durations below 150 fs. A versatile design permits simultaneous access of the 1040 nm fundamental, at an arbitrary power splitting ratio. High peak powers, excellent stability, and consistent long-term performance make the YLMO 520 a perfect fit to applications such as multiphoton excitation, pump-probe spectroscopy, or two-photon polymerization. Menlo Systems’ femtosecond fiber laser integrates the latest developments in fiber technology and incorporates these enhancements into an easy-to-use product.

Amplitude noise < 0.5% rms (over 24h)


Amplitude noise


Reproducibility Identical and consistent laser performance


Reproducibility fs Fiber Lasers


Optical Performance Autocorrelation and optical spectrum


Optical Spectrum  Autoorrelation 520 nm

Menlo Expert Jaroslaw Sperling 2023
Dr. Jaroslaw Sperling
Ihr direkter Draht zu unserem Experten




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  • YLMO 520

+49 89 189166 0

Menlo Systems, Inc.
+1 973 300 4490

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