The wavelength ofchina laser pointercontains 605nm which emits red laser beam

Abstract: Aiming at the key technologies of the high peak power lasers are introduced and analyzed. For the energy of the low repetition rate high peak power solid state laser, unstable resonator technology, combined with the gain distribution of the condenser chamber intersects the circle of light tracing technique, you can get the energy of the high beam quality laser output; satisfied for narrow pulse width sec / sub-nanosecond laser output end of pump microchip or pulse LD side-pumped cavity-dumped technician a good choice; high peak power output of the ultrashort pulse laser, the stability of the seed output and regenerative amplifier which play a a crucial role. The wavelength ofchina laser pointercontains 605nm which emits red laser beam.
Rapid application and popularization of solid-state lasers in the field of laser processing, the vast majority of domestic applications but also limitations in 1.064um infrared band, the peak power level of less than 50KW. Most of the material in the short wavelengths shows strong absorption features [1], nonlinear frequency conversion technology to be quasi-continuous green light, ultraviolet lasers, laser marking, grooving, scribing, trimming and surface hardening show better performance. Focused spot size and wavelength is proportional to the short wavelength green and UV laser can be no doubt get a higher resolution [2]; shorter pulse width does not just mean in the laser process to produce smaller heat-affected, but the shorter, the pulse width. The wavelength ofchina laser pointercontains 635nm which emits light red laser beam.
In general, the higher the damage threshold of the material, the higher the harmonic conversion efficiency of the nonlinear crystal. High peak power laser compared with traditional laser pulse energy (tens of mJ, and even a few joules), short pulse width (from femtosecond, picosecond to the subnanosecond and nanosecond or so), higher peak power ( MW, and even the GW), the more difficult and other characteristics. These lasers in laser processing, the flow field shows that ocean exploration, optoelectronic countermeasures, laser medicine, atmospheric monitoring, laser communications, harmonic transform, X-ray lasers, free electron accelerators, inertial confinement fusion [3], ultrashort pulse-doped titanium sapphire tunable lasers and other areas of year-on-year has more advantages. The wavelength of the laser light ofchina laser pointercontains 473nm which emits pure blue laser beam.
This type of laser technology as foreign, such as the United States Coherent, Spectra Physics, Germany antics take, possession the Belarus Solar and other large companies, so can be considered: the level of development of high peak power laser frequency conversion technology, is directly related or restrict the level of domestic development of laser technology, and influence the development of laser applications in industry, in national economic development is of strategic significance. Because the laser pulse peak power and pulse energy is proportional to and inversely proportional to the pulse width, so in order to get a higher peak power, or to achieve higher energy output, or shorten the pulse width. Insight into this type of laser technology features and to achieve a further breakthrough of great significance. The wavelength of the laser light ofchina laser pointercontains 405nm and 445nm which emit blue violet laser beam.
Energy of the high beam quality laser the VRMs non-unstable resonator cavity design to achieve high energy beam quality laser output, conventional stable cavity design is obviously far from being able to meet the requirements. At this point, the laser crystal rods the size was relatively large, the cavity design of the traditional stability, it is difficult to achieve the fundamental mode radius is larger than 1mm of stable output; traditional unstable resonator, can increase the volume of the fundamental mode , and yet there are hard-edge diffraction and near-field ripple [4], with variable reflectivity output mirror (VRM) [5], combined with the repetition rate requirements, the choice of appropriate magnification can generally achieve high beam quality laser output . VRM unstable resonator optical path shown in Figure 1. The wavelength of green laser pointer contains 589nm which emits yellow laser beam.