LASER Acronym — FRCA Primary MCQ
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Correct answer: C — Light Amplified by Stimulated Emission of Radiation
LASER = Light Amplification by Stimulated Emission of Radiation. Key properties of laser light: monochromatic (single wavelength) / coherent (waves in phase) / collimated (parallel beam / minimal divergence). These properties allow precise tissue targeting. Different wavelengths interact differently with tissues: CO2 (10600 nm) absorbed by water / Nd:YAG (1064 nm) deeper penetration.
Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment