Multi-mode root preserving ptychographic phase retrieval algorithm for dispersion scan
Abstract
We present a phase retrieval algorithm for dispersion scan (d-scan), inspired by ptychography, which is capable of characterizing multiple mutually-incoherent ultrafast pulses (or modes) in a pulse train simultaneously from a single d-scan trace. In addition, a form of Newton’s method is employed as a solution to the square root problem commonly encountered in second harmonic pulse measurement techniques. Simulated and experimental phase retrievals of both single-mode and multi-mode d-scan traces are shown to demonstrate the accuracy and robustness of the root preserving ptychographic algorithm (RPPA).
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 28, 2021
- Source ID
- 10.1364/oe.426859
Entities
People
- Alex Wilhelm
- Charles G. Durfee
- Daniel E Adams
- David Schmidt
Organizations
- Air Force Office of Scientific Research
- Colorado School of Mines
- National Science Foundation