Laser focusing of high-energy charged-particle beams

It is shown that laser focusing of high-energy charged-particle beams using the inverse Cherenkov effect is well suited to applications to large linear colliders. Very high gradient (≳0.5 MG/cm) lenses result that can be addeded sequentially without AG cancellation. These lenses are well understood, have small geometric aberrations, and offer the possibility of correlating phase and energy aberrations to produce an `achromatic' final focus.