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Influences of misalignment of control mirror of axisymmetric-structural CO 2 laser on phase locking

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Abstract

Based on the principle of phase locking of an axisymmetric–fold combination CO2 laser under the normal state condition, the mechanisms of phase locking are analyzed when the control mirror is misaligned. Then the overlapping rate (OR) of the mode volume is introduced: the main influences on phase locking are the OR, the average life of the light wave, the root mean square phase error, and the mode coupling coefficient; these influences on phase locking are studied. The distribution of the light intensity reflects the effect of phase locking. It is shown that the misaligned angle has little influence on the phase locking if it is within tolerance.

© 2008 Optical Society of America

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