Laser power drops after a few to several minutes of operation.

Most likely your laser needs a gas exchange (re-gas). Sometimes this symptom can be caused by a defective RF generator.Our company will check the damage and repair it.

Send us the resonator for diagnosis / repair.
There can be many reasons for this problem.

Properly performed reconditioning (gas replacement, cleaning or replacing the mirrors, and precise tuning of the RF generator) restores the resonator to its full, nominal output specified by the manufacturer, and in many cases, even slightly exceeds the factory specifications.

The best way to pack the resonator for shipment is to have the original manufacturer's packaging.
If you do not have it, you should ensure that the resonator is carefully protected against excessive shocks, using e.g. packaging foam, bubble wrap, etc.
Place the laser protected in this way in the carton box (in the case of heavy resonators, use the transport box).
Be sure to protect the laser exit hole from dust and scratching.

Our company provides a 12-month full warranty for the refurbished resonator. ( except for damage caused by the fault of the user )

The standard turnaround time is typically 5 to 7 business days, depending on the selected scope of work and the availability of dedicated optics. This includes the time required for full vacuum degassing and stability testing.

Yes. Every laser source leaving our lab undergoes hours of stress testing. Along with the resonator, the customer receives a full output graph of the power measurement, a temporal stability test, and a beam profiling test (TEM00).