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.
Near transform-limited 63-as high-harmonic pulses were successfully generated by compensating positive attosecond chirp of harmonics using negative group delay dispersion of Ar in broad spectral region. Without proper chirp compensation, the harmonic pulses were split into multiple peaks due to the large phase variation, in addition to the broadening of pulse duration. The chirpcompensated broadband...
Three-level neutral-point diode-clamped (NPC) multi-level inverter has been known as a superior topology of inverters. However, this topology method has an inherent problem of the neutral point potential variation. In this paper, a simple control scheme based on the unified voltage modulation technique has been proposed to balance the neutral-point voltage of three-level NPC inverter. The proposed...
Attosecond high-harmonic pulses obtained from Ar were characterized by the two methods — RABITT and FROG CRAB. The comparison of the two results revealed the capabilities of the two methods well.
To achieve high visual quality of intra-frame coding in order to minimize the visual quality degradation caused by color loss, the authors previously presented an RGB-domain inter-color compensation algorithm using strong correlation between RGB color components. Based on that inter-color compensation algorithm, this paper presents a 1080p 60 Hz CODEC system architecture designed to process a bit-rate...
For complete temporal characterization of an attosecond harmonic pulse train the frequency-resolved optical gating technique is applied to the photoelectron spectra of He driven by high harmonic pulses and IR laser pulses with time delay, which shows the detailed temporal information of attosecond pulses in the attosecond pulse train.
The intrinsic chirp of attosecond harmonic pulse obtained from Ar was compensated by taking into account the material dispersion of the harmonic generation medium itself. The measured attosecond pulse duration was very close to the transform-limited value.
Using the FROG CRAB method, complete temporal reconstruction of attosecond harmonic pulses was achieved. The compensation of intrinsic attosecond chirp was also demonstrated in the harmonic generation medium itself, thereby achieving transform-limited attosecond pulses.
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.