What does the word LASER stand for ?

Options

A. Light amplification by stimulated emission of radiation
B. light amplitude by stimulated emission of radiation
C. light amplification by strong emission of radiation
D. light amplification by stimulated emission of radiowave

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term LASER:**
- The term "LASER" is an acronym that represents a specific process involving light.

2. **Breaking Down the Acronym:**
- LASER stands for:
- **L** - Light
- **A** - Amplification
- **S** - Stimulated
- **E** - Emission
- **R** - Radiation

3. **Explaining Each Component:**
- **Light:** Refers to the electromagnetic radiation that is visible to the human eye.
- **Amplification:** Indicates the process of increasing the intensity of light.
- **Stimulated:** Refers to the process where an incoming photon stimulates the emission of another photon.
- **Emission:** The release of photons from atoms or molecules.
- **Radiation:** Refers to the energy emitted in the form of light.

4. **Summarizing the Definition:**
- Therefore, LASER stands for "Light Amplification by Stimulated Emission of Radiation," which describes how lasers produce a focused beam of light.

5. **Conclusion:**
- The acronym LASER encapsulates the fundamental principles behind the operation of laser devices.