Power scaling of a laser is increasing its output power without changing the geometry, shape, or principle of operation. Power scalability is considered an important advantage in a laser design.
Usually, power scaling requires a more powerful pump source, stronger cooling, and an increase in size. It may also require reduction of the background loss in the laser resonator and, in particular, in the gain medium.
Read more about Power Scaling: MOPA, Problem of Heat Sink, Coherent Addition and Combining Beams
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“The wise man should withdraw his soul within, out of the crowd, and keep it in freedom and power to judge things freely; but as for externals, he should wholly follow the accepted fashions and forms.”
—Michel de Montaigne (1533–1592)