The output power and/or the spectrum do not match the data specified in the certificate of conformity – what can I do?

There are different causes which can lead to a performance change of the laser system. Please check the following steps to ensure the performance change is not caused by an external factor. For gecco and venteon systems please ensure to check steps 1 – 7 prior to any cleaning or realignment. For venteon systems also include step 8 and 9.’

  1. Please ensure that you measured the output power without any external optics between the output aperture and the power meter and that the power meter is set to the correct values.
  2. Please switch the system off completely (including power supply unit), wait for approximately 30min and restart the system.
  3. Please ensure that the cooling system is running properly:
    1. Are the tubes connected?
    2. Is the chiller switched on?
    3. Is the fluid running?
    4. What are the temperatures of the laser head and power supply unit and are the temperatures settling?
  4. Please ensure that all cables are secured properly at the laser head and at the power supply unit.
  5. Please check if there is any damage or kink visible on the fibre.
  6. Please ensure that the fibre is not tied to any water hoses as the vibrations of the circulating fluid can lead to a performance change of the system.
  7. Please ensure that the laser head is mounted on a flat and clean metallic surface with no more than a torque of 2Nm.
    If the base, where the laser head is mounted on, is slightly bent, if there is some debris between the laser head and the base or if the laser head is mounted with more than Nm, screwing down can lead to a bending of the laser housing, which affects performance.
    Please make sure that both sides (bottom face of the laser and the table) are clean. Unscrew the laser and check the output power again. The laser head can be screwed down gently while observing the output power. The power should not change by more than 2%.
  8. For venteon lasers please ensure a proper coupling to the spectrometer. If using a wedged substrate to pick the beam, be sure to use the front reflex to avoid spatial effects. USB spectrometers need to be calibrated with respect to the Si-based detector sensitivity.
  9. For venteon systems please move the motorized dispersion wedge to optimize the spectrum, if possible.
  10. For gecco and venteon systems please clean optics according to the manual if previous steps did not solve the problem.
  11. For gecco and venteon systems please realign the cavity according to the manual if previous steps did not solve problem.
  12. If the problem still occurs please contact our support team

Related to: venteon/ taccor/ gecco