At that time, the level of research materials and laser performance limitations, PLD technology in the late 1980s and has not received extensive attention, but also in preparation, such as dielectrics, semiconductors and other aspects of film to explore some experience. PLD technology, every new development is accompanied by the generation of lasers and laser-matter interaction research progress. In the 1970s, the emergence of short-pulse Q-switched lasers, the instantaneous power can reach 106 W or more, can be used for the deposition of thin film composite component, which is widely used PLD basis [1]. In 1987, D. Dijkkamp et al. [2] Application of high-energy excimer laser pulse was successfully prepared high-quality high-temperature superconducting YBa2Cu3O7-x film. Subsequently, PLD technique has been used to prepare the increasingly important field of microelectronics and optoelectronics with the multi-oxide, has also been used to prepare nitrides, carbides, silicides and some organic matter, and even organic – inorganic composite film, and other fields. The drawing of green laser pointer should be maintained in the good status.
YAG laser is the Nd: YAG laser in high-pressure methane gas into the box (or neon gas, and other Raman media), by stimulated Raman scattering, the wavelength of 1.06μm laser frequency over 1.54μm . Main advantages are: You can use the existing Nd: YAG laser, passively Q-switched dye Nd: YAG and optical components; Raman frequency shift of the laser output pulse width than the Nd: YAG laser pulse is narrow. Which has good beam quality, high repetition rate in the work. The inspection report of green laser pointer needs the signature of the director of 200mw laser pointer workshop.
Currently, the U.S. developed the “Remington” laser system (LANTIRN) Raman frequency shift is used Nd: YAG laser target designator rangefinder, laser range finder is a multi-functional and modern airborne applications to expand a typical example. Nd: YAG laser pumped parametric oscillator. OPO (Optical Parametric Oscillators, optical parametric oscillator) type II KTP crystal using non-critical phase matching, the output wavelength of 1.5μm laser. This month is the best production month of green laser pointer .
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