Chinese Optics Letters, 2017, 15 (7): 071901, Published Online: Jul. 20, 2018
Intense keV IAP generation by orthogonally polarized multicycle midinfrared two-color laser fields Download: 952次
190.2620 Harmonic generation and mixing 020.2649 Strong field laser physics 320.2250 Femtosecond phenomena
Abstract
We theoretically investigate the attosecond pulse generation in an orthogonal multicycle midinfrared two-color laser field. It is demonstrated that multiple continuum-like humps, which consist of about twenty orders of harmonics and an intensity of about one order higher than the adjacent normal harmonics, are generated when longer wavelength driving fields are used. By filtering these humps, intense isolated attosecond pulses (IAPs) are directly generated without any phase compensation. Our proposal provides a simple technique to generate intense IAPs with various central photon energies covering the multi-keV spectral regime by using multicycle midinfrared driving pulses with high pump energy in the experiment.
Guicun Li, Yinghui Zheng, Zhinan Zeng, Ruxin Li. Intense keV IAP generation by orthogonally polarized multicycle midinfrared two-color laser fields[J]. Chinese Optics Letters, 2017, 15(7): 071901.