Ultra-fast pulsed digital holographic diagnosis of ejected material in femtosecond laser ablation of aluminum

A shortened procedure of micro-electromechanical systems fabrication by means of femtosecond laser;

Experimental study on storage by femtosecond laser writing/reading in photochromic/photobleaching materials;

Morphology and mechanism of femtosecond laser-induced structural changes in lithium niobate crystal;

This paper describes the mechanism and dynamical process of the ablation of metals by femto-second laser, reviews recent research development in the formation of the microstructure in metals by femto-second laser and discusses the possibility of femto-second laser for precise micro-processing.

The paper set forth femto-second laser micro-machining technology of the principle and characteristics, applications in micro-machine and micro-optics, and its progresses on machining are depicted.

Determination of air ionization threshold with femtosecond laser pulses;

Study of three-dimensional storage by parallel writing in PMMA with femtosecond laser pulses;

Femtosecond pulse laser has a lot of significant advantages, such as high peak value intensity ,precise ablation threshold ,limit thermal region ,high precision in micrometer level and so on.

We review the recent development of all solidstate femtosecond lasers.

Among these kinds of lasers, femtosecond lasers have extremely short pulse width (several femtosecond to hundreds of femtosecond) and highest peak power, the peak intensity of focused femtosecond laser is high to 10~(20)w/cm~2, such high peak power density is enough to ionize any materials.