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Brightness Converters

Definition: optically pumped devices where the generated optical output has a higher brightness than the optical pump source

Categories: photonic devices, laser devices and laser physics

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URL: https://www.rp-photonics.com/brightness_converters.html

The output power of a laser device is of course always lower than the pump power. Nevertheless, the brightness of an optically pumped laser can be far higher than the brightness of its pump source, if the pump source has a poor beam quality (thus a low brightness) while the beam quality of the output beam is much better.

Some examples of lasers serving as brightness converters are:

In many cases, the function as a brightness converter is essential for laser applications. For example, many solid-state lasers are used in laser material processing because their pump light, having too low brightness, could not be used directly. (Another frequently required function is pulse generation e.g. via Q switching.)

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See also: brightness, solid-state lasers, fiber lasers, vertical external-cavity surface-emitting lasers
and other articles in the categories photonic devices, laser devices and laser physics

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