Abstract
For the first time in the world, we found that there are two frequency-doubled laser beams simultaneously in the same self-frequency-doubled laser with rectilinear resonant cavity. One of the beams is the normal frequency-doubled laser beam propagates along the axis of the cavity, and the other is abnormal frequency-doubled laser beam. They are simultaneously generated in the same nonlinear crystal and are of the same frequency but propagate in two deferent directions orthogonal to each other.
© 1997 Optical Society of America
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