Walid Tawfik, is an Egyptian Professor, in laser physics, laser spectroscopy and ultrafast lasers at the National Institute of Laser (NILES), Cairo University, Cairo, Egypt. In 1994 he joined NILES as staff member and promoted as assistant lecturer, assistant professor, associate Professor and full professor in 1996, 2000, 2008 and, 2017 respectively. He received the B.SC, Master and Ph.D degrees in physics, laser physics, and laser spectroscopy in 1992, 1996, 2000, respectively, from Cairo University, Egypt. His interested in the field of ultrafast lasers and ultrafast phenomenon. His research plans are devoted to ultrafast optics and photonics: nonlinear interactions of short laser light and matter using time-resolved spectroscopy for laser-pulse durations from nanosecond to few-cycle. The ultrafast pulses are characterized using autocorrelator, SPIDER, and FROG measurements. The studies include the application of laser-induced breakdown spectroscopy (LIBS) used in the field of analytical spectroscopy and plasma characterization, in addition to ultrafast nonlinear phenomena due to propagation of ultrafast pulses in nonlinear medium and how the interactions can be exploited for improved material characterization. Recently, his research interest is focused on generation and characterization of high-energy ultrafast laser pulses using advanced techniques. With a funding of about half-million-dollar for an ultrafast laser project, a huge tabletop ultrabroadband ultrashort laser with peak power in the frontiers of Terra Watt has been built. The system is a Fewcycle ultrafast system of 5-fs pulse duration and 0.6 mJ at 1 kHz. During this project, extensive scientific collaborations with pioneer scientific groups have taken place in Japan, prof. Takayoshi Kobayashi, and in United States, Prof. Rick Trebino for improving the pulse compression and developing the ultrafast characterization methods. At Kobayashi?s Lab. (University of Electro-Communications, Tokyo, Japan), he has studied a new experimental method using ultrafast noncollinear optical parametric amplifiers (NOPA) system to describe the mechanism of the sequential two-photon excitation process and to reveal novel information about the excited-state dynamics of the ring-opening reaction of photochromic molecule. The prospective plans aim to reach attosecond streaking to study transient absorption spectroscopy of ultrafast electron motion. He is a senior member of different international professional societies like IEEE, OSA, APS, and SPIE. He has collaborated with different international groups in USA, Japan, South Korea and Germany and published 46 papers till now.

Ultrafast Optics, Photonics, Atomic Physics, Laser Physics, Plasma Physics, Laser spectroscopy, Ultrafast phenomena and Femto-Physics