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The word laser is an acronym meaning light $a$ mplificationby stimulated $e$ mission of radiation. What is the stimulated emission of radiation?
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This can be represented as: \[ \text{Photon}_{694nm} + \text{Cr}^{3+}_{level2} \rightarrow ? \] Show more…
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The word laser is an acronym meaning light amplification by stimulated $e$ mission of $r$ adiation. What is the stimulated emission of radiation?
A laser (light $a$ mplification by stimulated emission of radiation) provides nearly monochromatic, high-intensity light. Lasers are used in eye surgery, CD/DVD players, basic research, and many other areas. Some dye lasers can be "tuned" to emit a desired wavelength. Fill in the blanks in the following table of the properties of some common types of lasers:
A helium-neon laser emits light of wavelength $632.8 \mathrm{nm}$ and has a power output of $4 \mathrm{~mW}$. How many photons are emitted per second by this laser?
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