In the last few decades, ultrafast laser technology has undergone great development with an increasing number of applications. Nowadays, the use of such sources is well consolidated in various fields of research that range from ultrafast optics and metrology to microfabrication techniques. The key to the success of ultrafast sources consists of the possibility that they offer to explore light–matter interaction regimes that are inaccessible with other laser sources, enabling access to the ultrashort temporal scale and to extremely high pulse energy.

In this Special Issue, we aim to provide an overview of the state of the art in ultrashort pulse generation techniques and their applications to cutting-edge research fields. Topics of interest include, but are not limited to, the following:

• Novel tools and techniques for ultrafast laser development towards the scaling of pulse temporal duration, energy, and spectrum;
• Time-resolved spectroscopy and imaging;
• Ultrashort pulse applications for the manipulation and control of the optical and electronic properties of matter;
• High-order harmonic generation and attosecond science.

This Special Issue will feature a wide selection of original research articles, review articles, and short communications from the leading groups in the field. For this reason, we would like to invite you to contribute a paper on your work or on any topic you wish to write about related to the issue at hand.

We would be delighted if you could accept our invitation, having every confidence that your contribution would be very timely and of high interest to the community.

Dr. Rebeca Martinez Vazquez
Dr. Anna Gabriella Ciriolo
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• ultrafast laser science
• high-order harmonic generation
• attosecond science
• ultrafast spectroscopy