The Design And Experimental Study Of Diode-pumped Green Laser

The laser is used in medical field more and more widely. Laser therapy has already been extensive concern as it has the advantages include simple method, remarkable effect, short period, low side effects and risks, is competing with the general medical experts, the treatment of cutaneous vascular lesions is more unique advantage. Compare with the traditional lamp-pumped lasers, diode-pumped laser with high efficiency, good stability, long life, compact structure and a series of advantages, become one of the hotspots in the laser research field. Based on the theoretical and experimental research of the diode-pumped intracavity frequency doubling straight\ V-type resonator 532nm green laser, and animal experiments about cutaneous vascular lesions, we achieve some research results.The main content and innovation in the dissertation as follows:1. To review the development of laser and its application in the medical field, to summarize the latest domestic and international laser research, to analyze the advantage of diode-pumped 532nm green laser in the treatment of cutaneous vascular lesions.2. To analyze diode-pumped 532nm laser with the nonlinear optical frequency doubling theory, to discuss the phase matching, walk-off effect and the temperature on the harmonic frequency doubling efficiency, to sum up the nonlinear crystal basic characteristics and advantages and disadvantages.3. To study the thermal effects of the work material and frequency doubling crystal detailedly, to discuss the temperature on the laser stability and lifetime implications, giving a theoretical analysis and design of the thermal lens effect of insensitivity of the V-type resonator ,to study the work of a single pulse technology, no water cooling technology and beam quality optimization.4. To prove that it is an effective method for the treatment of cutaneous vascular lesions studying the mechanism of laser treatment of vascular disease and methods. To do animal experiments, optimize the prototypical long-pulse laser treatment parameters according to the animal experimental data and provide reference for the design and development of clinical single wavelength and multiwavelength laser prototype aeroplane.