Active Q-Switch option Nd:YAG laser

This option of the Nd:YAG Laser Experiment (ref. 204820) allows for understanding the generation of pulses.

Topic covered:
- Generation of short pulses by an active Q-switch system (LiNbO3 crystal)
- Characterization of pulse generation: threshold, pulse shape, duration, and energy

A Pockels cell (LiNbO3) modifies the polarization state of the Nd:YAG emission. A Brewster plate introduces losses and disrupts the laser operation. When the cell is switched, losses are minimized and a laser pulse accumulates. The voltage and switching frequency are adjusted by the Pockels cell controller. In combination with the 204821, intra and extra-cavity SHG can be demonstrated.

Composition:
▪ Pockels cell (LiNbO3), adjustable Brewster plate, high voltage pulse generator