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Mode Selection Properties of Segmented‐Rod Giant Pulse Lasers

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2 Author(s)
Birnbaum, M. ; Aerospace Corporation, El Segundo, California ; Stocker, Tom L.

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The segmented‐rod ruby laser structure has been operated as a giant pulse laser by use of a Kerr cell to provide the required Q switching. The giant pulse output, peak power of 106 W/cm2 and pulse width of 30 nsec, has been analyzed by use of Fabry‐Perot etalons. The number of oscillating modes is shown to be similar to that previously observed in pulsed operation. Good agreement is found between the measured and computer‐calculated frequency differences. The computer calculations presented indicate that the best performance can be expected when the two laser rod segments are of approximately equal length.

Published in:

Journal of Applied Physics  (Volume:37 ,  Issue: 2 )