  It is shown how laboratory experiments performed with high intensity
femtosecond lasers can probe the physics of black holes in the near-horizon
regime. The acceleration generated by the high intensity laser ranging from
$10^{13}$g to more than $10^{18}$g is identified with the gravitational
acceleration at stretched horizons. In the black-hole's asymptotic region, the
stretched-horizon-reflected light shows a measurable universal phase
acceleration of $c^4/4GM$.
  PACS numbers: 04.70.Bw, 97.60.Lf, 52.40.Nk, 52.50.Jm
