A pulsed dye laser with a short cavity length emits a broad spectrum. If the dye concentration is significantly increased, which consequence follows?

💡 Explanation

Increasing dye concentration enhances self-absorption, because photons at the edges of the emission spectrum are more likely to be absorbed by unexcited dye molecules; therefore, spectral narrowing occurs rather than increased pulse duration which is more related to cavity length and gain switching.

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