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Questions and Answers
What does LASER stand for?
How is laser light different from ordinary light?
What makes laser light intense, directional, and focused?
Which region poses a retinal hazard from laser light?
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What is the function of the pumping system in a laser?
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How are lasers commonly designated?
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What type of laser pulse duration is extremely short?
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What determines how a laser is described?
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What raises the lasing medium to the metastable or lasing state in some lasers?
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Study Notes
Laser Fundamentals
- LASER stands for Light Amplification by Stimulated Emission of Radiation.
Laser Light Characteristics
- Laser light is different from ordinary light because it is coherent, meaning it has a single frequency and a fixed phase relationship.
- Laser light is intense, directional, and focused due to the stimulated emission of photons, which are in phase with each other.
Laser Safety
- The retina poses a hazard from laser light, as it can cause damage to the eye.
Laser Components
- The pumping system in a laser raises the lasing medium to a higher energy state, preparing it for stimulated emission.
Laser Classification
- Lasers are commonly designated by their wavelength, such as ultraviolet, visible, or infrared.
Laser Pulse Duration
- Ultrashort laser pulses have extremely short durations, often measured in femtoseconds (10^-15 seconds).
Laser Description
- A laser is described by its wavelength, power output, and pulse duration.
Lasing Medium
- In some lasers, an energy source, such as a flash lamp, raises the lasing medium to the metastable or lasing state, enabling stimulated emission.
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Description
Test your knowledge about the definitions and characteristics of lasers with this quiz. From understanding the acronym to properties of laser light, this quiz covers various aspects of laser technology.
