C-Fiber 780
Femtosecond Erbium Laser

Menlo_Systems_Femtosecond_Fiber_Laser_C Fiber 780_2018 05 08_3w


Advanced Features and Benefits 

  • Lowest Amplitude and Phase Noise
  • Single Mode-Lock State with all PM solution
  • Dual colour output 1560nm / 780nm with arbitrary splitting ratios of output power
  • Shortest 780nm femtosecond pulses for femtosecond fiber laser with 50-60fs (Femtoscale option)
  • Repetition Rate 50-250 MHz Large tuning range of the repetition rate with typically 400kHz @ 100MHz (Sync Option)
  • Complete synchronization solution available: laser + synchronization electronics (all components from one supplier) with full automation → hands off operation
  • Repetition rate synchronization at all frequencies
  • Additional seed ports for later upgrade
  C-Fiber 780                    
C-Fiber 780 HIGH POWER
Central Wavelength 780 nm ± 10nm 780 nm ± 10nm
Average Power  >100 mW >250 mW
Pulse Energy  >1.0 nJ  >2.5 nJ
Pulse Width  <100 fs (<70 fs with FEMTOSCALE) <100 fs (<70 fs with FEMTOSCALE)
Repetition Rate* 100 MHz (50-250 MHz with VARIO) 100 MHz (50-250 MHz with VARIO)
Repetition Rate Instability  <1 ppm over 20 hours at constant temperature  <1 ppm over 20 hours at constant temperature
Timing Jitter  <2 fs [rms, 10 kHz.. 1 MHz] <2 fs [rms, 10 kHz.. 1 MHz]
Output Port  free space free space
Auxiliary Output Port**  free space, 1560 nm, >250 mW free space, 1560 nm, >500 mW
Additional Fiber-Coupled Seed Port  1 (up to 4 with MULTIBRANCH) 1 (up to 4 with MULTIBRANCH)
Polarization  linear, s-polarized linear, s-polarized
Beam Height  75 mm  75 mm

*Please inquire for your specific combinations of average power, pulse duration and repetition rate. ** User can switch between 780 nm and 1560 nm port (arbitrary splitting ratios possible).


Menlo Systems’ fiber-based femtosecond laser sources integrate the latest achievements in fiber technology into easy-to-use products. Menlo Systems’ unique figure 9® design results in reproducible and long-term stable operation. It is based on the well-established Nonlinear Amplifying Loop Mirror (NALM) mode locking mechanism. Both oscillator and amplifier use polarization maintaining (PM) fiber components only, ensuring excellent stability and low-noise operation. The laser is maintenance free, user installed and ready to use at the press of a single button. Customize your laser with the available options to match the requirements of your application. Complete synchronization solution is available with laser and synchronization electronics. All components from one supplier with full automation guarantees hands off operation and more time for your experiments.


  • SYNC100 Repetition Rate Synchronization

    Product Code: SYNC100

    Tunable cavity length by high-bandwidth piezo-controlled synchronization

  • RRE-SYNCRO Repetition Rate Stabilization

    Product Code: RRE-SYNCRO

    Feedback electronics to phase lock pulses to an external clock (see product page for more details)

    All-in-one synchronization solution: laser and synchronization electronics all components from one supplier: full automation for hands off operation, integrated and tested for an immediate start. → best performance with more time for your experiments!

    Synchronization: Laser to reference

    Synchronization Laser ReferenceRelative Phase Noise between stabilized laser and 10 MHz reference:

    RMS Timing Jitter: <200 fs [0.1 Hz–500 kHz] or same as reference, whichever applies first

    Integrated timing jitter of free running laser: <2 fs [rms, 10 kHz.. 1 MHz]


    Synchronization: Laser to laser

    Synchronization Laser Laser

    Relative Phase Noise between two lasers in master-slave configuration

    RMS Timing Jitter down to <20 fs [0.1 Hz–500 kHz] for Menlo fs lasers as master/slave with small locking bandwidth

    Integrated timing jitter of free running laser: <2 fs [rms, 10 kHz.. 1 MHz]



  • VARIO User-Defined Repetition Rate

    Product Code: VARIO

    Factory-set value selectable in the 50-100 MHz range

  • MULTIBRANCH Additional Seed Ports

    Product Code: MULTIBRANCH

    Seeding of multiple amplifiers with optional subsequent frequency conversion to cover multiple wavelengths

  • FEMTOSCALE Additional Compression Unit

    Product Code: FEMTOSCALE

    Compression of second harmonic output pulse length to <70 fs


Amplitude noise < 0.5% rms (over 24h)

MENLO SYSTEMS_Femtosecon Fiber Laser_Measurementdata_C-Fiber780_2017_05.jpg


Reproducibility Identical and consistent laser performance.


Reproducibility fs Fiber Lasers


Optical Performance Autocorrelation and optical spectrum

 C-Fiber_780_Autocorrelation_Optical_Spectrum_780nm_and_1560 nm.jpg


Menlo Expert Dmitry Dorofeev 2024
Dmitry Dorofeev
Your direct line to our expert

Data sheets

Product literature

Ordering information

  • Product Code
  • C-Fiber 780

+49 89 189166 0

Menlo Systems, Inc.
+1 973 300 4490

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