The main goal of the National System for Generation and Distribution of the Reference Optical Carrier is to create an ultrastable laser system that can be linked to an optical atomic clock, along with a distribution network using fiber optic links. The optical reference signal with low phase noise will be sent to the participants of the NLPQT consortium, where it will be available to interested industry partners. The System will enable implementation of a number of services addressed to the photonic, optical, chemical and related industries in the areas listed below:

Local access to
ultrastable optical carrier

Low-noise optical frequency signal from an ultrastable cavity may be used in all applications where a short term stability or synchronization (in case of signal distribution) is necessary. Stability on time scales up to 100 s is more than two orders of magnitude better than that of a hydrogen maser. In combination with an optical atomic clock it is possible to average down the frequency signal to the level suitable for gravitational anomalies detection on time scales of seconds or minutes. The reference signal can be delivered to the customer's location.

Lasers characterization

  • Wavelength calibration of continuous-wave lasers:
    • referenced to a wavemeter with absolute accuracy of 60 MHz (range 350-1700 nm),
    • referenced to a stabilized optical frequency comb with absolute accuracy < 5 kHz (possibility of reaching 1 Hz level for 650-950 nm and 1050-2000 nm ranges),
  • Determination of continous-wave lasers linewidth and stability with reference optical carrier and a frequency comb.

Reference signals

  • Transfer of the optical carrier stability to a selected frequency range from visible to medium infrared
  • RF signal with low and known phase noise for calibration of measuring devices, measurements of the noise spectrum of tested RF sources etc.


  • Optical cavities, laser stabilization, frequency control, high vacuum systems for metrology
  • Continuous-wave lasers characterization in a wide wavelength range, for applications such as fibre gyroscopes, laser frequency standards, laser molecular spectroscopy.