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Which consequence results when thermal gradients in an actively cooled high-power laser gain medium exceed design limits?

A)Reduced pump light absorption efficiency
B)Increased spontaneous emission losses
C)Thermally induced birefringence emerges
D)Enhanced population inversion depletion rate

💡 Explanation

Thermally induced birefringence causes polarization distortions because spatially-varying refractive index changes induce variable phase shifts across the beam. Therefore, the laser's output quality degrades and power decreases, rather than other consequences caused by different thermal effects.

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