The Development and Applications of Femtosecond Lasers
A special issue of Crystals (ISSN 2073-4352).
Deadline for manuscript submissions: 31 December 2024 | Viewed by 15
Special Issue Editor
Interests: raman spectroscopy; photoluminescence spectroscopy; ultrafast spectroscopy; 2D materials; confocal microscopy; near-field optical microscopy; ultrafast electron and phonon dynamics; excitons; polaritons
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Special Issue Information
Dear Colleagues,
Recent advances in femtosecond laser technology have significantly impacted materials’ characterization and processing. The development of compact, application-oriented, and cost-effective femtosecond laser sources is expanding the scientific community's interest in these innovative experimental tools. Femtosecond laser-based ultrafast spectroscopies have advanced our understanding of dynamic phenomena in physics, chemistry, and biology by enabling the exploration of shorter time scales. This progress has deepened our understanding of fundamental light–matter interactions.
The huge peak power and high repetition rates of femtosecond lasers have revolutionized our ability to investigate materials' nonlinear optical responses. This capability has spurred research into ultrafast all-optical signal processing applications, such as phase conjugation, phase/amplitude regeneration, and mode/wavelength conversion, which are crucial for ultrahigh-speed optical communications.
In addition to optical communications, the nonlinear effects of femtosecond lasers have facilitated the development of new microscopy and bioimaging techniques. Two- and three-photon microscopies have provided unprecedented access to previously inaccessible biological structures, approaching limits in imaging depth and resolution. These techniques also reduce background noise and minimize tissue damage, enhancing image quality and safety.
Femtosecond lasers are also invaluable in micromachining, offering precise processing with a minimal impact on surrounding areas across various materials, including metals, ceramics, semiconductors, transparent materials, polymers, and biological tissues. These properties make ultrafast laser-based material processing vital for industrial manufacturing and delicate medical surgeries.
This Special Issue serves as a multidisciplinary forum, inviting researchers to contribute to the broad field of ultrafast laser technology. It seeks to highlight both the fundamental and applied aspects of laser–material interactions, fostering collaboration and innovation across diverse scientific disciplines.
Full research papers, short communications, and reviews covering the following areas are welcome:
- Development of new femtosecond laser systems.
- Investigation of electron and phonon dynamics in physics, chemistry, and biology by means of ultrafast spectroscopy techniques.
- Femtosecond optical nonlinearities.
- Ultrafast optical signal processing and ultrahigh-speed optical transmission technology.
- Femtosecond laser source and techniques for biomedical imaging.
- Femtosecond irradiation-based structural and surface modifications of materials.
- Femtosecond laser-based medical surgery in ophthalmology, dentistry, etc.
Dr. Felice Gesuele
Guest Editor
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Keywords
- femtosecond laser sources
- ultrafast spectroscopy
- electron and phonon dynamics
- multiphoton imaging
- nonlinear optical imaging
- ultrafast all-optical signal processing
- femtosecond laser irradiation and micromachining
- laser-based surgery
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