Understanding Laser Light

Why can't regular light be focused into a laser beam?

• Because regular light is not coherent

• Because regular light is too dim

• Because regular light is too bright

• Because regular light is too fast

What does the term 'laser' stand for?

• Light Amplification by the Stimulated Emission of Rays

• Light Amplification by the Stimulated Emission of Radiation

• Light Amplification by the Spontaneous Emission of Radiation

• Light Amplification by the Spontaneous Emission of Rays

What is the main characteristic that distinguishes laser light from regular light?

• Speed

• Color

• Brightness

• Coherence

What type of coherence refers to the narrow range of wavelengths in laser light?

• Temporal coherence

• Spatial coherence

• Electric coherence

• Magnetic coherence

Which type of coherence involves the alignment of electric fields across the laser beam?

• Spatial coherence

• Temporal coherence

• Electric polarization coherence

• Magnetic polarization coherence