Petahertz-bandwidth spectral combs from the amplified spontaneous emission of a collisional plasma-based x-ray laser

I. R. Khairulin, V. A. Antonov, I. D. Morskov +1

The possibility of generating spectral combs of petahertz bandwidth is demonstrated from amplified spontaneous emission (ASE) of a collisional plasma-based x-ray laser when its act…