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← ScienceWhich outcome occurs when a pulsed laser's chirp rate exceeds medium's dispersion?
A)Pulse self-compression becomes pulse broadening✓
B)Blue-shifting initiates stimulated Raman scattering
C)Four-wave mixing generates parametric amplification
D)Third harmonic generation reaches saturation
💡 Explanation
Pulse self-compression reverses to pulse broadening due to Group Velocity Dispersion. The refractive index's frequency dependence causes faster frequencies to outpace slower ones; therefore, broadened pulse occurs rather than compressed pulse because of input chirp overcoming material dispersion.
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