Paper Details: Downloads: 1129
Serial Number: P1111444352
Title: Numerical Study of Auto-Control and Stabilization of Pulse Repetition Rate of Passively Q-Switched Laser Systems
Authors: Jala M. El-Azab and Hamed M. Kandel and Mohamed A. Khedr
Abstract: In this work, a simplified technique to control and stabilize the passively Q-switched laser pulses is proposed and denoted by automatic pulsed pumping technique. The technique is applied to a diode-pumped Yb:YAG laser passively Q-switched by Cr4+:YAG as saturable absorber by numerically solving the coupled rate equations describing the system. The technique is based on the detection of the generated Q-switched pulses which alter the pumping power either to be switched off or set to a lower value depending on the selected modulation depth. The system was pumped using different pumping techniques; continuous, pulsed pumping and automatic pulsed pumping in order to compare the time stability of the generated Q-switched pulses. The proposed technique has shown a good control of the pulse repetition rate of Q-switched pulses with high stability. The technique allowed high pulse repetition rate as similar to the pulsed pumping scheme while maintained the time stability of the continuous pumping scheme
Keywords: Q-switched lasers; pulse repetition rate; time stability; pulsed pumping
Journal/Conference: International Journal of Automatic Control and System Engineering
Volume: 14
Issue: 2
Submission Date: 10/26/2014 12:00:00 AM
Review Date: 11/12/2014 12:00:00 AM
Publishing Date: 12/16/2014 12:00:00 AM
Article Downloads: 1129
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