Which consequence results when thermal lensing increases excessively in a pulsed laser?

💡 Explanation

Excessive thermal lensing introduces a variable focal point because the optical path changes with temperature-induced variations in the refractive index of the gain medium, therefore the laser average power becomes unstable rather than maintaining steady operation; it impacts mode stability.

• Which consequence results when rapid oxidation inside an internal combustion engine?
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• Which outcome reduces fringe contrast when partially coherent light illuminates mismatched optical flats?
• Which outcome occurs when cryogenic fuel flows exceed a turbopump's stability threshold?
• Which outcome occurs when the conduction band minimum lowers?
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