CAJ | 학술논문

　　为了实现太阳光向激光的转化，设计并搭建了采用两级汇聚系统的实验系统。用菲涅耳透镜作为第1级汇聚系统，以漫反射锥型腔作为第2级汇聚系统，采用Nd∶YAG作为工作物质。在太阳光的入射功率密度大约为950W/m 2时，实验最高可得到13.3W的功率输出。用LASCAD软件对谐振腔进行模拟，得到了晶体棒工作时的温度分布和折射率分布；通过改变参量，对系统进行优化，得到了输出功率随腔长和输出镜反射率的变化规律，找到了最佳腔长为142mm，最佳输出镜反射率为91％。结果表明，通过调整腔长和输出镜反射率的大小，找到最佳值，可有效地提高太阳光直接抽运激光器的输出功率。
　　위료실현태양광향격광적전화，설계병탑건료채용량급회취계통적실험계통。용비열이투경작위제1급회취계통，이만반사추형강작위제2급회취계통，채용Nd∶YAG작위공작물질。재태양광적입사공솔밀도대약위950W/m 2시，실험최고가득도13.3W적공솔수출。용LASCAD연건대해진강진행모의，득도료정체봉공작시적온도분포화절사솔분포；통과개변삼량，대계통진행우화，득도료수출공솔수강장화수출경반사솔적변화규률，조도료최가강장위142mm，최가수출경반사솔위91％。결과표명，통과조정강장화수출경반사솔적대소，조도최가치，가유효지제고태양광직접추운격광기적수출공솔。
In order to achieve the conversion from the sunlight to the laser , two-level aggregation experimental system was designed and built.By choosing a Fresnel lens as the first level of aggregation system , the diffuse reflectance tapered cavity as the second level of aggregation system and Nd∶YAG as the working substance, the experimental maximum power output was 13.3W available, when the sunlight incident power was about 950W/m2 .In order to optimize the experimentalsystem and improve the power output, the resonant cavity was simulated by LASCAD software .The temperature distributionand the refractive index distribution during the working of the crystal rod were obtained .The system was optimized bychanging the parameters.The variation of the output power along with the cavity length and the output mirror reflectivity ,the best cavity length of 142mm and the output mirror reflectivity of 91% were obtained.The results show that the outputpower of the laser pumped by sunlight directly can be improved effectively by adjusting the cavity length and the outputmirror reflectivity and the best value can be achieved .