Single-shot d-scan technique for ultrashort laser pulse characterization using transverse second-harmonic generation in random nonlinear crystals

Abstract

We demonstrate a novel dispersion-scan (d-scan) scheme for single-shot temporal characterization of ultrashort laser pulses. The novelty of this method relies on the use of a highly dispersive crystal featuring antiparallel nonlinear domains with a random distribution and size. This crystal, capable of generating a transverse second-harmonic signal, acts simultaneously as the dispersive element and the nonlinear medium of the d-scan device. The resulting in-line architecture makes the technique very simple and robust, allowing the acquisition of single-shot d-scan traces in real time. In addition, the technique can be further simplified by avoiding the need of dispersion pre-compensation. The retrieved pulses are in very good agreement with independent FROG measurements. We also apply the new single-shot d-scan to a TW-class laser equipped with a programmable pulse shaper, obtaining an excellent agreement between the applied and the d-scan retrieved dispersions.

arXiv comment7 pages, 5 figures

References in corpus (3)

• Simultaneous compression and characterization of ultrashort laser pulses using chirped mirrors and glass wedges
• Self-calibrating d-scan: measuring ultrashort laser pulses on-target using an arbitrary pulse compressor
• Single-shot implementation of dispersion-scan for the characterization of ultrashort laser pulses

Cited by in corpus (3)

• Characterizing ultrashort laser pulses with second harmonic dispersion scans
• Single-shot Dispersion Sampling for Optical Pulse Reconstruction
• Ultrafast pulse duration measurement method of near-infrared pulses for a broad range of wavelengths using two-photon absorption in a liquid and fluorescent dye solution