Ptychographic retrieval for complete ultrashort pulse amplitude swing reconstruction
arXiv:2501.13184 · doi:10.1016/j.optlastec.2025.112939
Abstract
Ultrafast experiments require precise temporal characterization of laser pulses, where pulse reconstruction is typically achieved through iterative retrieval algorithms. In this context, the amplitude swing technique has emerged as a robust and versatile tool for measuring scalar and vector pulses, using a compact inline setup. Here, we develop a unified theory of amplitude swing and introduce a ptychographic iterative engine algorithm to retrieve scalar and vector pulses from the different amplitude swing implementations (conventional and generalizing). For scalar pulses, we show the new capability of retrieving both amplitude and phase. The algorithm is validated with simulated and experimental traces of scalar and vector pulses, which are benefited from the new algorithm. In conclusion, a powerful tool for pulse characterization is provided, extending the capabilities of amplitude swing (e.g., to double pulses) and enhancing the ultrafast optics measurement toolkit.
10 pages, 5 figures
References in corpus (9)
- Ptychographic reconstruction algorithm for frequency resolved optical gating: super-resolution and supreme robustness
- Ptychographic reconstruction of attosecond pulses
- Ptychographic ultrafast pulse reconstruction
- Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
- Characterizing ultrashort laser pulses with second harmonic dispersion scans
- Measurement of ultrashort vector pulses from polarization gates by in-line, single-channel spectral interferometry
- A review of ptychographic techniques for ultrashort pulse measurement
- Temporal characterization of broadband femtosecond laser pulses by third-harmonic dispersion scan with ptychographic retrieval
- Solving non-linear integral equations for laser pulse retrieval with Newton's method