Question:
In a LASER, which of the following processes have to be minimized.
In a LASER, which of the following processes have to be minimized.
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LASER works on stimulated emission. To maximize light, absorption losses must be minimized.
Updated On: Jun 23, 2025
- Absorption and stimulated emission
- Absorption only
- Spontaneous emission only
- Stimulated emission only
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The Correct Option is B
Solution and Explanation
Step 1: LASER stands for Light Amplification by Stimulated Emission of Radiation.
Step 2: For efficient laser operation:
Stimulated emission must dominate.
Spontaneous emission is unwanted but unavoidable.
Absorption must be minimized — it reduces photon output.
Step 3: Hence, the primary process to be minimized is absorption only.
Step 2: For efficient laser operation:
Stimulated emission must dominate.
Spontaneous emission is unwanted but unavoidable.
Absorption must be minimized — it reduces photon output.
Step 3: Hence, the primary process to be minimized is absorption only.
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