Author Affiliations
Abstract
1 College of Science, Zhejiang University of Technology, Hangzhou 310023, China
2 Department of Physics, Zhejiang University, Hangzhou 310027, China
3 Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
We demonstrate a two-component detection of a coherent population trapping (CPT) resonance based on virtually imaged phased array (VIPA). After passing through a VIPA, the two coupling lights with different frequencies in the CPT experiment are separated in space and detected individually. The asymmetric lineshape is observed experimentally in the CPT signal for each component, and the comparison with the conventional detection is presented. The shift of the CPT resonant frequency is studied with both the two-component and one-component detections. Our scheme provides a convenient way to further study the CPT phenomenon for each frequency component.
virtually imaged phased array coherent population trapping Chinese Optics Letters
2021, 19(8): 083001
Author Affiliations
Abstract
We develop a phenomenological model to investigate dynamics of ionization-induced injection. In the "bubble" regime of laser wakefield acceleration (LWFA), it is found that there is an upper limit for laser intensity of ionization-induced injection. In the plane perpendicular to the laser polarization, when the laser pulse is linearly polarized, ionization-induced injected electrons exhibit a filamented structure and semi-coherent betatron oscillation.
350.5400 Plasmas 350.4990 Particles 350.5610 Radiation Chinese Optics Letters
2013, 11(s2): S23501
