The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Parallel to the rising of a number of scientific and industrial applications of ultrashort laser pulses, their precise temporal characterization has become a major issue. Recently, the new pulse measurement technique of dispersion-scan (d-scan) was introduced, which is based on measuring the spectrum of a nonlinear signal as a function of varying amounts of known dispersion added to the pulse [1]...
The temporal characterization of few-cycle pulses is of paramount importance for advanced applications, such as attosecond physics. However, their large bandwidths can pose significant challenge for usual diagnostic techniques. Moreover, the methods for their generation — e.g. hollow-core fiber compression [1] — often lead to spatial inhomogeneities, which are coupled to the temporal/spectral domain...
We have post-compressed 25 fs (Fourier limit) amplified pulses in an argon-filled hollow-core fiber. The output pulses were compressed using a pair of wedges and chirped mirrors down to 4.5 fs (Fourier limit of 4.1 fs), which corresponds to less than two optical cycles. We then performed the characterization of the pulses by combining the d-scan and the STARFISH techniques. The temporal (and spectral)...
Due to the spatiotemporal and spatiospectral coupling of the light field, the characterization of ultrashort pulses cannot be usually accomplished in separated spatial or temporal domains. For this reason, considerable efforts have been done during last years to measure the full spatiotemporal amplitude and phase of ultrashort pulses by using several techniques [1–3].
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.