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LD-pumped solid-state laser technology is the use of a semiconductor laser diode pumped laser gain medium, or arrays (such as Nd: YAG, Nd: YVO 4 , Nd: GdVO 4 , Yb: YAG, Tm, Ho: YVO 4 , etc.) to produce the fundamental frequency light through a nonlinear optical frequency conversion crystals (such as KTP, LBO, BBO, PPLN, PPKTP, etc.) multiplier, and frequency, difference frequency and quasi-phase matching nonlinear optical technology, infrared light - visible - ultraviolet light laser output. In this thesis, LD pumped solid-state lasers for the study center for theoretical analysis and experimental research. Theory, solid-state lasers in the review and development process of nonlinear optical frequency conversion technology, based on a simple analysis from UV - visible - the means of achieving infrared lasers, application and progress; nonlinear optics theory and technology, optical resonator cavity theory and technology and Q-theory and technology for a more comprehensive study. Experiments, studies based on a combination of water-cooled and air-cooled LD end-pumped CW green laser and pulsed 1064nm LD side-pumped lasers and electro-optical Q532nm/355nm pulsed lasers; experimental work with the content of the main innovations is summarized as follows: 1 to design a water-cooled and air-cooled based on the combination of the cooling system. The system is small size, high efficiency, good stability, low noise, and having a water-cooled and air-cooled advantages is conducive to miniaturization of high-power lasers. 2, to the cooling system of the laser crystal and the doubling crystal is cooled; using pumped Nd: YVO 4 KTP intracavity frequency doubling, to obtain a stable CW green laser output; when the laser crystal absorption when the pump power of 24.3W to get 4.2W stable laser output 532 nm green light - optical conversion efficiency of 17.3%. 3, the theoretical discussion of the optimal transmittance pulsed laser output power, and 1064nm pulsed laser experiments conducted studies to determine the optimum output 1064nm transmittance of 60%. Without the addition of electro-optical Q device, get up 102.7W pulsed laser output; in Canada EO Q device, get 23.6W pulsed laser output. 4, the design side-pumped electro-optical Q-switched green laser, the use of flat - flat chamber cavity frequency doubling, when the pumping current is 120A, the green light to get the pulse of the highest output power of 3.62W, 1064nm to 532nm conversion efficiency 15.3%; while when using intracavity frequency doubling the output power is reduced. 5, the use of Class Ⅱ KTP crystal frequency and the frequency with Class Ⅱ LBO crystals for critical phase matching and frequency of the external cavity, the electro-optical Q-repetition frequency 600Hz, you get the highest average power of 375mW, pulse width of 12ns, pulse energy 0.625mJ, peak power of 52.1kW of 355nm UV pulsed laser output. Finally, respectively, from the cavity design, lens coating selection, and frequency doubling crystal with Crystals choice crystal electro-optical Q and Q-mode power supply design and other aspects of analysis, in order to achieve high power, high stability, high beam quality output basis.
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