Which outcome occurs when the optical gain saturates in a pulsed laser?

A)Pulse shortening and peak power increase✓

B)Wavelength shift toward the red end

C)Decreased beam divergence and coherence

D)Suppression of spontaneous emission noise

💡 Explanation

Pulse shortening and increased peak power result because gain saturation causes preferential amplification of the pulse leading edge over its trailing edge via gain depletion. Therefore, pulse shortens and peak intensity rises, rather than wavelength shifting because of nonlinear susceptibilities.

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Which outcome occurs when the optical gain saturates in a pulsed laser?

💡 Explanation

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