Sprecher
Beschreibung
In order to solve the problem of the large beam divergence in fast ignition schemes and increase the laser energy deposition on the target core. We systematically studied the relationship between the guiding and acceleration of target surface electrons (TSE) and laser parameters in previous works[1]. The beam quality is found to depend critically on the intensity ratio of the laser prepulse and laser incidence. By optimizing the system, highly collimated mono-energetic TSE beams at MeV level with low divergence and high charge per shot has been observed along the target surface following the interaction of bulk target irradiation by femtosecond laser pulses at relativistic intensity[2]. Then, energy enhancement of the TSE beam was significantly improved by employing a ultra-intense sub-picosecond laser system and we obtained high-quality, tens of MeV class TSE beam with a large total charge[3]. Recently, we studied the terahertz transit radiation driven by TSE experimentally and theoretically and obtained preliminary results.
Related References:
[1] J. Y. Mao, L. M. Chen, X. L. Ge et al., Phys. Rev. E. 85, 025401 (R) (2012)
[2] J. Y. Mao, L. M. Chen, K. Huang et al., Appl. Phys. Lett. 106, 1311058 (2015)
[3] J. Y. Mao, O. Rosmej, Y. Ma et al., Opt. Lett. 43, 3909 (2018)
