The ruby laser contains chromium (III) ions in Al2O3. It is the Cr(III) ion that emits light of 627 nm under the laser emission conditions. If a ruby contains 0.0010% Cr by mass, what is the minimum mass of a ruby (in g) required to produce a single pulse with energy 1.5 J?

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The Answer of The ruby laser contains chromium (III) ions in Al2O3. It is the Cr(III) ion that emits light of 627 nm under the laser emission conditions. If a ruby contains 0.0010% Cr by mass, what is the minimum mass of a ruby (in g) required to produce a single pulse with energy 1.5 J?

The Ruby Laser Contains Chromium (III) Ions in Al2O3