The d-scan is an inline, compact and high-performance device for the simultaneous measurement and compression of even the most demanding ultrashort laser pulses

Sphere Ultrafast Photonics is committed to finding the best solution for measuring your laser system, providing custom solutions covering different wavelength ranges, pulse durations and repetition rates

Benefiting from more than 15 years of experience, Sphere Ultrafast Photonics offers a new generation of products and services in the ultrafast pulsed laser regime

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<2.5 fs – the shortest light pulse in the world directly from a single channel compressor!

2.5fs pulse sphere photonics

We have successfully generated and measured the temporal profile of intense single-cycle 2.5 fs pulses, using a fully inline and collinear over-octave implementation of dispersion-scan (d-scan). We used a single-stage hollow-core fiber (HCF) compressor, pumped by sub-25 fs, 500 uJ pulses from a Ti:Sapphire CPA system (CLPU). The HCF was followed by ultra-broadband doubl- angle chirped mirrors (450-1000 nm, UltraFast Innovations GmbH), which are part of the single-cycle d-scan system (Sphere Ultrafast Photonics, SA). The spectral phase of the pulses was successfully retrieved over more than one octave using only SFG signal from 280 to 420 nm, revealing the generation of intense CEP-stable high-quality single-cycle pulses with 2.51 fs (FWHM), very close to the Fourier limit of 2.43 fs, and with a peak power of approximately 40 GW. This extreme source is highly promising for attoscience and high-field laser physics.