AEvaluation of spatial coherent combination of laser beams
-
摘要: 根据目标上实际最大光强与理想合成效果下最大光强的比值定义了合成效果因子,用以评价相干合成效果。在此基础上研究了影响相干合成效果的主要因素，并对合成效果因子的传输特性进行了研究。结果表明：阵列紧密程度对合成效果影响不大，在较小的空间占空比下有可能得到较好的合成效果。影响合成效果的主要因素是随机相位差，当随机相位差增大到一定程度时，光束合成其实已经由相干合成过渡到了非相干合成，得不到预期的相干合成效果；随着传输距离的增大，空间占空比对合成效果因子的影响将进一步减小，影响合成效果的主要因素之一是随机相位差。Abstract: The combination effect was evaluated by combining effect factor defined as the ratio of actual maximum light intensity to the ideal combined light intensity at the target. On this basis，the main factors affecting combination effect and the propagation property of combination effect factor were studied．Good combination effect could be obtained with a small duty ratio，while the main factor influencing the combination effect is the random phase errors，because the beam combination has actually become incoherently combined when the random phase errors are greater than a specific value．With the increase of the propagation distance，the influence of the duty ratio on combination effect becomes smaller, and one of the main factors influencing combination effect is random phase errors.
-
-
［1］周朴，王小林，马阎星，等.激光阵列部分相干合成的光束质量［J］.光学学报，2010，30(4)：1066-1069.ZHOU Pu，WANG Xiao-lin，MA Yan-xing，et al.Beam quality of partially coherent combining of laser array［J］.Acta Optica Sinica，2010，30(4)：1066-1069.(in Chinese with an English abstract)［2］周炳琨，高以智，陈倜嵘，等.激光原理［M］.第四版.北京：国防工业出版社，2004.ZHOU Bing-kun，GAO Yi-zhi，CHEN Ti-rong，et al.Principles of lasers［M］.4th ed．Beijing：Defense Industry Press，2004.(in Chinese)［3］LAUTERBORN W，KURZ T，WIESENFELDT M.Coherent opticsfundamentals and applications［M］.BeiJing：World Publishing Corporation．1998.［4］唐前进，施翔春，胡企铨.填充因子对激光组束远场功率分布的影响［J］.推进技术，2007，28(5)：566-569.TANG Qian-jin，SHI Xiang-chun，HU Qi-quan.Effect of filled factor on the far field profiles of laser beam combination［J］.Journal of Propulsion Technology，2007，28(5)：566-569.(in Chinese with an English abstract)［5］曹涧秋，陆启生，侯静，等.光纤激光器相干合成系统中组束误差对远场光场的影响［J］.中国激光，2008，35(3)：351-358．CAO Jian-qiu，LU Qi-sheng，HOU Jing，et al.Influence of combining errors in the system for coherent combining of fiber lasers on the far field of output［J］.Chinese Journal of Lasers，2008，35(3)：351-358．(in Chinese with an English abstract)［6］董光焰，郑永超，张文平，等．相控阵激光雷达技术［J］.红外与激光工程，2006，35(增刊)，289-293．DONG Guang-yan，ZHENG Yong-chao，ZHANG Wen-ping，et al．Technique of phased array ladar［J］.Infrared and Laser Engineering，2006，35(sup)：289-293.(in Chinese with an English abstract)［7］王炜，何兵，周军，等.光纤激光相干阵列远场光强分布的影响分析［J］.光学学报，2009，29(8)：2248-2255．WANG Wei，HE Bing，ZHOU Jun，et al.Study on far-field intensity distribution of fiber laser used in coherent beam combination［J］.Acta Optica Sinica，2009，29(8)：2248-2255.(in Chinese with an English abstract)［8］NABORS C D.Effects of phase errors on coherent emitter arrays［J］.Applied Optics，1994，33(12)：2284-2289.［9］LI Yong-zhong，QIAN Lie-jia，LU Da-quan.Cohe-rent and incoherent combining of fiber array with hexagonal ring distribution［J］.Optics & Laser Technlogy，2009，15(3)：957-963.
计量
- 文章访问数: 3320
- HTML全文浏览量: 105
- PDF下载量: 829
下载:
陕公网安备 61011302001501号 