Which risk increases when a semiconductor laser's power supply current exceeds the threshold?

💡 Explanation

Exceeding threshold current leads to excessive optical power density at the laser facet; this induces bond breakage via **photochemical etching**, because optical energy promotes reactions therefore accelerating degradation; rather than increased emission or carrier stagnation under higher density.

• Which outcome occurs when the expansion valve supplying an HVAC evaporator malfunctions and restricts refrigerant flow?
• Which risk increases when rapid cylinder wall quenching occurs during Direct Injection (DI) operation?
• Which robotic motion error occurs when encoder resolution is insufficient during inverse kinematics calculations?
• Within a forward-biased LED, which mechanism increases efficiency at higher drive currents by ameliorating the 'efficiency droop' issue?
• Which outcome occurs in hardened steel lathes due to prolonged use at increasingly high spindle speeds?
• Which risk increases when thermal expansion constraints exceed column yield strength?