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Re:U.S. Air Force has shot down multiple air-launched missil... by bufferoverflow on Tuesday May 07, 2019 @12:13PM (#19850841)
Dielectric mirrors can reflect 99.9% of light in a wide spectrum, and 99.999% for narrow spectrum and limited angles.

So even if we take the 99.9% one, your 50kW laser will only heat it with 50W of power, which is nothing compared to the heating an ICMB (or its warhead) has to withstand.

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