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← ScienceWhich optical consequence results when a beam-steering mirror in a pulsed laser system experiences thermal blooming?
A)Increased pulse duration
B)Reduced beam coherency✓
C)Harmonic frequency generation
D)Polarization state altering
💡 Explanation
Increased temperature gradients cause the mirror to deform via thermal blooming, therefore reducing beam coherency because surface irregularities disrupt wavefront phase uniformity rather than alternative spectral or pulse-shape distortions.
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