Which risk increases when thermal lensing occurs within a pulsed laser?

💡 Explanation

Thermal lensing creates a refractive index gradient in the laser medium, because absorbed power rises, causing beam waist reduction, intensifying the fluence; therefore, this optical damage risk rises, rather than beam improvement under ideal conditions.

• Which outcome occurs when strain increases beyond yield strength in metal alloy undergoing welding?
• Which outcome results when crystal lattice imperfections disrupt electron bands?
• Which outcome reduces jet engine compressor stall due to choked airflow?
• Which consequence results when excessive heat encounters an aircraft turbofan engine combustor?
• Which outcome occurs when a voltage standing wave is established on unterminated coaxial cable?
• Which phenomenon increases when pulsed current flows through nanoscale capacitor dielectrics?