Population Inversion Is Important for the Generation of a Laser

question 2

Multiple Choice

Population inversion is important for the generation of a laser beam because it assures that:

• A)spontaneous emission does not occur more often than stimulated emission
• B)photons do not split too rapidly
• C)more photons are emitted than are absorbed
• D)photons do not collide with each other
• E)photons do not make upward transitions

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Definitions:

Bandwidth

The range of frequencies within a given band, particularly used in reference to the transmission capacity of a network or the passband of a filter.

Parallel LC Circuit

A circuit configuration that contains both inductance (L) and capacitance (C) in parallel, which can exhibit resonance at a specific frequency where reactive effects cancel each other.

Impedance

A measure of the total opposition that a circuit presents to alternating current, including both resistance and reactance.

Apparent Power

The total power within an AC circuit, represented as VA (volt-amperes), which combines both real power and reactive power.