Abstract
The relativistic self focusing of an ultraintense laser propagating through an underdense plasma is analyzed from a geometrical optics point of view, exploiting the classical hamiltonian formalism. The distribution of the laser intensity along the self-generated plasma channel is studied and compared to measurements.
Highlights
The relativistic self focusing of ultraintense lasers in underdense plasmas is a well-known phenomenon, of great interest in last decades after the advent of ultrashort lasers of the femtosecond-class
Self focusing effects have been observed since the first era of pulsed laser systems of nanosecond-class, but only with new compression techniques (Chirped Pulse Amplification [1]) and with the possibility to exploit ultrashort laser pulses it became possible to experimentally explore the variety of optical phenomena which relate to relativistic optics [2]
In the present letter we introduce a ray optics hamiltonian approach [9] to the propagation of a ultraintese laser through an underdense plasma, with the main aim to study the effects of relativistic self focusing
Summary
The relativistic self focusing of ultraintense lasers in underdense plasmas is a well-known phenomenon, of great interest in last decades after the advent of ultrashort lasers of the femtosecond-class. In the present letter we introduce a ray optics hamiltonian approach [9] to the propagation of a ultraintese laser through an underdense plasma, with the main aim to study the effects of relativistic self focusing. Starting from the consideration that the ratio λ0/λp
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