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← ScienceWhich outcome results when thermally-induced stresses misalign an industrial CO2 laser's Brewster window?
A)Reduced output beam power✓
B)Wavelength shift to infrared
C)Increased coherence and collimation
D)Faster gain medium depletion
💡 Explanation
Reduced output power occurs because slight tilt hinders Brewster window's polarization effect, which reflects some intracavity light away reducing the gain. This is birefringence. Therefore, power drops rather than shifting wavelength, because the gas mixture constrains that.
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