No, and nether can the Death Star, it's not just thermal energy they have to worry about. Once you get lasers that powerful the kinetic energy will be so immense that even if they can completely reflect the thermal energy (which they can't) they will still get destroyed.
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Kinetic?
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Lasers have kinetic energy, it's just that it usually doesn't matter because lasers in real life are to weak.
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Really? But it's light...
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It has momentum http://youtu.be/M-VZdJu0bLU