Which outcome results when a pulsed laser's intensity fluctuates significantly?

💡 Explanation

Spectral broadening occurs because temporal fluctuations induce Fourier transformation, therefore broadening bandwidth of frequencies emitted rather than resulting from aberrations, uneven saturation or achieving diffraction limitations under standard conditions; dynamic instability induces mode jumps during pulse.

• Which outcome compromises quantum key distribution during data transmission?
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• Which outcome diminishes when multiple lasers lack coherence?
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