Accuracy and longitudinal-mode-selection performance of etalon in pulsed single longitudinal laser

According to the principle of longitudinal-mode-selecting by etalon in pulsed single longitudinal laser, the influences of thickness accuracy and position accuracy of various F-P etalons on the performance of longitudinal mode selecting are analyzed quantitatively. In order to compensate the thickness deviation of etalon, the angle detuning of various etalons are calculated. Then the effects of the incident angle deviation on transmittance curve of F-P etalon are investigated. These are important for setting the mechanical structure design, the tolerance of devices, and the adjustment accuracy of the pulsed single longitudinal laser. In the linear-cavity laser with an F-P etalon for mode-selecting, a near-diffraction-limited single longitude pulsed output is obtained. The maximum single pulse output energy is 8.41 J and the pulse width is 32 ns.