Single-Shot Measurement of Temporally-Dependent Polarization State of Femtosecond Pulses by Angle-Multiplexed Spectral-Spatial Interferometry.
We demonstrate that temporally-dependent polarization states of ultrashort laser pulses can be reconstructed in a single shot by use of an angle-multiplexed spatial-spectral interferometry. This is achieved by introducing two orthogonally polarized reference pulses and interfering them with an arbitrarily polarized ultrafast pulse under measurement. A unique calibration procedure is developed for this technique which facilitates the subsequent polarization state measurements. The accuracy of several reconstructed polarization states is verified by comparison with that obtained from an analytic model that predicts the polarization state on the basis of its method of production. Laser pulses with mJ-level energies were characterized via this technique, including a time-dependent polarization state that can be used for polarization-gating of high-harmonic generation for production of attosecond pulses.
Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu 30013, Taiwan.|Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
Ming-Wei
MW
Lin
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA.|Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109, USA.
Igor
I
Jovanovic