Isolated attosecond pulses from Airy-beam-driven relativistic plasma mirrors

Relativistically intense laser-driven plasma mirrors offer a promising route to produce attosecond pulses with high brightness. One major challenge is to generate an isolated attosecond pulse instead of a train of attosecond pulses when using multicycle driving lasers. Here we numerically demonstrate a scheme to achieve this goal by using Airy laser beams, whose main intensity self-bends transversely during propagation. The generated attosecond pulses are well separated in space and emitted in different directions. This scheme has the advantage of weak dependence on laser duration and thus is better suited for isolated attosecond pulse generation from a large class of conventional multicycle relativistic lasers worldwide.