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Are laser systems based on exotic ice crystal phases theoretically feasible?

I've been reviewing non-traditional materials for photonic applications beyond conventional semiconductors and dyes. In studying the unique electronic and optical properties of high-pressure water ice phases, a speculative idea emerged. I'm curious if the structured lattice and potential for doped impurities in these phases could, in principle, support population inversion and stimulated emission.

 

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By Neethi Answered 3 years ago

In theoretical materials science, we often explore extreme regimes. While fascinating, I'd recommend extreme caution here. The primary hurdle is environmental: Ice VII, X, and similar phases require immense, stable gigapascal pressures to exist, making any practical cavity design nearly inconceivable. Furthermore, while these ices have interesting optical properties, I haven't seen any credible evidence or mechanism suggesting they could achieve the necessary population inversion for lasing. The energy states involved in their molecular frameworks aren't suited for it. The concept is a profound thought experiment for discussing material limits, but it's not a feasible engineering pathway.

 

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