Optical Frequency Comb

MENLO SYSTEMS Optical Frequency Comb FC1500 250 WG 3w


Advanced Features and Benefits

  • high repetition rate
  • fully fiber-coupled interferometer
  • operational range from 500 nm to 2100 nm
  • extended offset frequency tuning range
  • turnkey metrology system, fully automated with comb control and data acquisition software
Comb spacing 250 MHz
Accuracy 10-14 in 120 s or same as reference, whichever applies first
Stability 5x10-13 in 1 s or same as reference, whichever applies first
Tuning range of comb spacing >2 MHz
Tuning range of offset frequency >250 MHz
Wavelength range 1050-2100 nm and 500-1050 nm*

*with optional M-NIR and M-VIS extension packages


Frequency comb technology makes direct measurement of absolute optical frequencies possible. The FC1500 Optical Frequency Comb is a compact, portable and flexible fiber-based femtosecond frequency comb system. With the Extension Packages M-VIS and M-NIR the system is capable of providing at the same time a source for frequency metrology in both the visible (500-1050 nm) and the near-IR regions (1050-2100 nm) of the spectrum. A wide range of optional units enables us to tailor this versatile system to customer specific metrology solutions.


  • EOM-Phase Electro-optic Phase Modulator

    Product Code: EOM-Phase

    Integrated into the laser cavity; allows high-performance phase locking to an optical reference by increasing the bandwidth of the repetition rate lock by more than an order of magnitude. With this EOM option sub-Hz line widths can be achieved. Required for high-performance phase locking to an optical reference.

  • M-NIR Extension Package

    Product Code: M-NIR

    Extends the stabilized comb spectrum to a range of 1050 - 2100 nm with free-space output port and >200 mW average power. The measurement port can be optimized independently from the CEO frequency stabilization.

  • M-VIS Extension Package

    Product Code: M-VIS

    Extends the stabilized comb spectrum to the 500-1050 nm range with free-space output port and >60 mW average power.

  • HMP High Power Measuring Port

    Product Code: HMP

    Provides stabilized comb light with highest power at customer-defined wavelengths for high precision measurement of lasers with low power levels (<100 µW). A minimum of 3 mW average power in a 3 nm window is provided at the central wavelength specified by customer. Available for 1050 - 2100 nm (HMP-NIR), or 525 - 1050 nm (HMP-VIS). The output is fiber coupled and optional available as free space.

    For 390 - 400 nm (HMP-UV) a minimum of 1 mW average power in a 1 nm window is provided. the output is free space.

  • P250 PM PULSE EDFA Erbium-doped Fiber Amplifier

    Product Code: P250 PM PULSE EDFA

    All polarization maintaining (PM) amplifier delivers intense near infrared pulses with >350 mW at 1560 nm. Several amplifiers can be added for multiple measurement ports.

  • M-780 High Power Measuring Port at 780 nm

    Product Code: M-780

    Output provides stabilized comb light with highest power at 780 nm.
    Contains an amplifier and subsequent frequency conversion, delivering a minimum of 150 mW average power with a central wavalength in the range of 780-800 nm. The output is free space and optional available as fiber-coupled.

  • BDU Beat Detection Unit

    Product Code: BDU

    Generates and measures the beat signal between the frequency comb and an external continuous wave (cw) laser. Available for various spectral ranges, with free space or fiber-coupled optics, and matched to the customer's laser.

    For more information: BDU

  • LLE-SYNCRO Laser Locking Electronics

    Product Code: LLE-SYNCRO

    Allows locking of an external cw laser to the stabilized frequency comb. Performance has been field tested with lasers from major suppliers.

    For more information: LLE-SYNCRO

  • Microwave Ultrastable RF Output

    Product Code: Microwave

    Ultrastable RF output in the 1 MHz-10 GHz range. Utilizing a high-sensitive fast photodetector and a frequency divider where needed.

  • GPS GPS-based 10 MHz Frequency Reference

    Product Code: GPS

    Provides the RF reference input signal for the frequency comb, combining the superior short term stability of an ultrastable quartz oscillator with the long term accuracy of the GPS.

    For more information: GPS

  • WLM-NIR Integrated Wavelength Meter

    Product Code: WLM-NIR

    Integrated wavelength meter with 100 MHz accuracy at 900 - 1700 nm

  • WLM-VIS Integrated Wavelength Meter

    Product Code: WLM-VIS

    Integrated wavelength meter with 100 MHz accuracy at 500 - 1100 nm

  • SmartAmp SmartComb Extension

    Product Code: SmartAmp

    The SmartComb can be extended with a 19”, 3 HE rack containing up to 6 amplifiers, 6 beat detection units (BDU) and frequency counters. Using the SmartComb as a seed, the comb light is distributed and amplified with the SmartAmp. Together with internal BDUs and counters the system automatically measures your laser frequencies, in the range of 530-2000 nm, to the 14th digit. In addition, the beat signals serve as error signals to stabilize your CW laser (e.g. with a MenloSystems SYNCRO LLE unit) when required.

    In short: Stabilize all frequencies and transitions in your quantum optics laboratory to one absolute frequency reference!

    Menlo SmartComb SmartAmp 3w

  • Tablemounted SmartComb Extensions

    Product Code: Tablemounted Extension

    The SmartComb can provide stabilized comb output as a seed, thereby extending the range from 530 to 2000 nm with optional retrofittable extensions.

    Menlo SmartComb extended 3w

Menlo Expert Ben Sprenger 2019
Dr. Benjamin Sprenger
Your direct line to our expert

Data sheets

Product literature

Ordering information

  • Product Code
  • FC1500-250-WG

+49 89 189166 0

Menlo Systems, Inc.
+1 973 300 4490

Feedback? Click here