Louisy Maïté, Guo Chen, Neoričić Lana, Zhong Shiyang, L'Huillier Anne, Arnold Cord L, Miranda Miguel
Appl Opt. 2017 Nov 10;56(32):9084-9089. doi: 10.1364/AO.56.009084.
We present a compact implementation of the ultrashort pulse measurement technique based on dispersion scans (d-scan), allowing single-shot measurement of few-cycle pulses. The main novelty in our design, making our setup extremely compact and simple, is the use, after a prism, of a spherical mirror in an off-axis geometry. The intentionally introduced strong astigmatism makes it possible to image the output of the crystal in one direction while focusing it in the other direction, resulting in the output face of the prism being imaged into a line in the second-harmonic crystal. The technique is validated by comparing measured dispersion scans, retrieved spectral phases and temporal profiles of this single-shot system with standard d-scan results.
