外部参量对KNSBN晶体鸟翼式互抽运相位共轭器的影响

Studies of the Bird-Wings Phase Conjugator in KNSBN Crystal

互抽运相位共轭器(MPPC)不要求两抽运光相干,具有时域和空域信息分离的特点,为了研究两束抽运光对MPPC的影响,利用我国山东大学研制的钾钠铌酸锶钡(KNSBN)晶体,使用无预置光栅,研究了入射角度,入射位置,入射抽运比的变化与互抽运相位共轭反射率(R)的关系.结果表明,非对称入射,R随入射角度增大而减小;对称入射,存在最佳的入射角度与入射位置,使得R最大,并且R随抽运比增大而减小.文章中给出了抽运光束的理论推导,分析了它对互抽运相位共轭反射率的影响.

Mutually pumped phase-conjugator（MPPC） does not require two pumped light coherent,with the character Time domain and airspace separated,In order to researching the two pumped beams of light effect on MPPC,using potassium sodium strontium barium niobate（KNSBN） crystal which was developed by Shandong university in our country,we studies the relationship between the phase-conjugate refluence and the incident angles,the incident position and the change of pump ratio.The results show that the refluence decreases with the incident angles increasing in asymmetric incident,but existing the best incident angle and incident position in symmetric incident,the refluence decreases with the pump ratio in this condition.Providing pumped beams of light,analyzed they affect on mutually phase-conjugate refluence