A brief review is given regarding ultrafast laser micromachining of materials. Some general
experimental observations are first provided to show the characteristics of ultrafast laser …

Gigahertz (GHz) femtosecond (fs) lasers have opened possibilities for enhancing and
controlling the laser machining quality to engineer the physicochemical properties of …

New results about relaxation dynamics of optically excited electrons in metals, mostly gold
and nickel films, are presented. Emphasis is on electron temperature near the surface as …

Electron-electron and electron-lattice interactions in noble metals are discussed in the light
of two-color femtosecond pump-probe measurements in silver films. The internal …

10 nm to 500 nm have been measured by femtosecond time-resolved pump-probe
experiments. A conspicuous change of the relaxation behavior was found around 100 nm for …

Weak electron-phonon coupling in Au and Cu produces a significant thermal resistance
when heat flows from a thin Pt layer into a thin Au or Cu layer on picosecond time scales …

Over the past few decades, the rapid development of ultrafast lasers, such as femtosecond
lasers and picosecond lasers, has opened up new avenues for material processing due to …

Hot electrons dominate the ultrafast (∼ fs–ps) optical and electronic properties of metals and
semiconductors, and they are exploited in a variety of applications including photovoltaics …

Optical second-harmonic generation, although a sophisticated technique, is making a
significant contribution to the characterization of surfaces and interfaces. The advantages …

Time-resolved surface second-harmonic generation (SHG) is used to probe electron
relaxation processes in gold following intense laser excitation at 1.55 eV. For the first time …