Which risk increases in a semiconductor laser when pumping current exceeds threshold?

💡 Explanation

Exceeding the threshold causes multiple longitudinal modes to oscillate, because spatial hole burning depletes population inversion nonuniformly. Therefore, multimode operation increases, rather than single-mode as intended for stable, narrow-linewidth lasing; the primary cause is spatial hole burning.

• Which outcome occurs when highly concentrated ionic solutions experience evaporative drying?
• Which outcome occurs when rapidly sublimating solid carbon dioxide cools electronics?
• Which changes in the reaction will occur when excess reactant continuously removes a product in a reversible esterification?
• Which consequence results when estimating flow with Bernoulli's equation despite significant friction?
• Which outcome signifies flow regime transition according Reynolds number increase within porous media?
• Which effect emerges when decreasing laser cavity length?