Recent development of a station dedicated to Laser Shock Peening around newly developed BIVOJ laser system is reported. We also describe further plans related to upgrade of the laser system itself as well as plans for establishment of a dedicated sample preparation and characterization lab.
So-called hybrid mirrors, consisting of broadband metallic surface coated with dielectric reflector designed for specific
wavelength, becoming more important with progressing development of broadband mid-IR sources realized using
parametric down conversion system. Multiple pulse nanosecond laser induced damage on such mirrors was tested by
method s-on-1, where s stands for various numbers of pulses. We show difference in damage threshold between common
protected silver mirrors and hybrid silver mirrors prepared by PVD technique and their variants prepared by IAD.
Fused silica based optical fibers are broadly used for beam delivery in laser technology, mostly for continuous lasers. However, powerful pulsed beams are still very challenging for optical fiber technology; in particular in the field of pulsed lasers providing ns-length pulses or shorter at high repetition rate. According to the current knowledge, laser induced damage threshold (LIDT) of optical fiber surfaces does not achieve values generally represented for properly treated fused silica. Therefore, broader testing and understanding of optical fibers surface laser induced damage threshold and influencing factors is a key in utilization of optical fibers in pulsed lasers.
An overview of Czech national R&D project HiLASE (High average power pulsed LASEr) is presented. The HiLASE project aims at development of pulsed DPSSL for hi-tech industrial applications. HiLASE will be a user oriented facility with several laser systems with output parameters ranging from a few picosecond pulses with energy of 5 mJ to 0.5 J and repetition rate of 1-100 kHz (based on thin disk technology) to systems with 100 J output energy in nanosecond pulses with repetition rate of 10 Hz (based on multi-slab technology).
The Czech national R&D project HiLASE is a platform for development of advance high repetition rate, diode pump solid
state lasers (DPSSL) systems with energies in the range from mJ to 10J and repetition rate from 10 Hz to 100 kHz. In this
paper an overview and a status of the project will be given. Additionally some applications of these lasers in the hi-tech
industry, which initiated their development, will be also presented.