OEM 1064/532nm PICOSECOND laser system

This is a MOPA (Master Oscillator Power Amplifiers) laser system. The master oscillator is based on an Nd:YAG crystal with a passive Q-switch Cr:YAG. Obtaining a uniform distribution of the laser beam at the output of the articulated manipulator (without diffraction rings) is achieved through the use of three spatial filters in the system*. The image transfer system (Image Relay) to the output of the manipulator is implemented inside the laser module, so there are no lenses in the articulated manipulator. In addition, a uniform beam profile close to flat-top is ensured by optimized gain profiles in the amplifier modules. The first amplification module implements a 2-pass amplification circuit with depolarization compensation, the second module amplifies in one pass to an energy of 1 J (1064 nm). Conversion to the second harmonic (532 nm) is provided in the LBO crystal up to an energy of 0.5 J.

To ensure the most stable output parameters of the energy and beam profile, the laser has a pulse picking system: pulses are cut from the base frequency of the master oscillator of 10 Hz, which makes it possible to obtain the following repetition frequencies: 1 Hz, 2 Hz, 2.5 Hz, 3.3 Hz , 5 Hz, 10 Hz. The system has an external calibration port that allows you to check the output energy at the output of the manipulator daily and, if necessary, automatically adjust it to the original factory values.