Which risk increases when improperly aligning laser-induced breakdown spectroscopy (LIBS) optics?

💡 Explanation

Plasma ignition weakens at poor alignment because reduced energy density diminishes multi-photon ionization, a nonlinear optical effect that triggers plasma formation. Therefore, ignition efficiency drops, rather than increased absorption, spectral line broadening, or reduced excited-state emission because these occur *after* ignition.

• Which risk increases when impedance mismatch occurs inside underground fiber optic data lines?
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• Which mechanism causes degradation of signal integrity when a high-frequency signal passes through long transmission lines?