飞秒脉冲正交位相压缩光的产生  

Generation of femtosecond pulsed quadrature phase squeezed light

作　　者：刘洪雨[1] 陈立[1] 刘灵[1] 明莹[2] 刘奎[1] 张俊香[1] 郜江瑞[1] 

机构地区：[1]山西大学光电研究所,量子光学与光量子器件国家重点实验室,太原030006 [2]延边大学物理系,延吉133002

出　　处：《物理学报》2013年第16期179-182,共4页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2010CB923102);国家自然科学基金(批准号:11274212;11174189)资助的课题~~

摘　　要：利用锁模飞秒脉冲激光二次谐波为抽运源,同步抽运单共振光学参量振荡器,抽运光中心波长为425nm,重复率为76MHz,脉宽180fs,光学振荡器下转换晶体采用Ⅰ类共线PPKTP,实验上实现了压缩度为2.58dB的正交位相压缩光.考虑到实验系统的效率,可以推知光学参量振荡器输出的下转换光压缩度为4.48dB.We demonstrate experimentally the short pulse amplitude squeezed light from a singly resonant synchronously pumped optical parametric oscillator （SPOPO）. The SPOPO operates in the frequency degenerate case and below threshold, with using a periodically poled potassium titanyl phosphate crystal. The pump laser is the second harmonic of a ultrashort mode-locked femtosecond pulse at 850 nm. The reduction of quantum noise of 2.58 dB is obtained experimentally. The squeezing extent is deduced to be 4.48 dB.

关 键 词：同步抽运光学参量振荡器 压缩光 锁模飞秒脉冲 

分 类 号：TN24[电子电信—物理电子学]