摘要
用倍频稳频ＮｄＹＡＰ激光器作泵浦源，经ＫＴＰ晶体构成的半整块ＯＰＯ腔，在９０°非临界相位匹配情况下获得高量子相关孪生光束，实测强度差噪声压缩度在１．５ＭＨｚ附近达８０％（７ｄＢ），阈值泵浦功率为８０ｍＷ。
The twin beams with high quantum correlation at 1 08 μm wavelength have been generated from the semimonolithic KTP OPO pumped by a frequency doubled and frequency stabilized Nd∶YAP laser The parametric frequency down conversion with the type ⅠⅠ 90° noncritical phase matching has been achieved in the α cut KTP for the 0 54 μm pump power. The quantum noise reduction of 80% (7 dB) around 1 5 MHz on the intensity difference between the twin beams has been observed The pump threshold for the OPO is about 80 mW.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第7期631-634,共4页
Chinese Journal of Lasers
基金
国家自然科学基金
山西省自然科学基金
山西省归国留学人员基金
