Investigation of spectral bandwidth of BBO-I phase matching non-collinear optical parametric amplification from visible to near-infrared

作     者：Bo LIU Ruobing ZHANG Huagang LIU Jing MA Chen ZHU Qingyue WANG 

作者机构：College of Precision Instrument and Opto-electronics Engineering Key Laboratory of Optoelectronics Information and Technical Science Tianjin University 

出 版 物：《Frontiers of Optoelectronics》 (光电子前沿(英文))

年 卷 期：2008年第1卷第Z1期

页      面：101-108页

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by the National Key Basic Research Special Foundation of China (No. C1999075201) the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20030056021) 

主　　题：nonlinear optics broadband femtosecond optical parametric amplification (OPA) angular dispersion group velocity matching 

摘      要：Laser sources which have high power, short time duration and are broadly tunable are needed for the application of ultra-fast lasers. Femtosecond optical parametric amplification(OPA) is one of the most important techniques to produce broadly tunable and several femtosecond laser pulses. To obtain an extremely short pulse, the femtosecond OPA should adequately support a large spectral bandwidth. Ultra-broadband type-I phase matching OPA based on BBO was theoretically investigated. The achromatic phase matching(APM) technology was introduced to femtosecond OPA, and a broadband phase matching condition was given when the signal beams were angularly *** methods were presented to choose the optimized non-collinear angle and angular dispersion. Effects of non-collinear angle and rate of angular dispersion to the parametric bandwidth were also discussed. The results indicate that a proper non-collinear angle of the noncollinear optical parametric amplifier(NOPA) and getting signal beams dispersed at the right rate in nearinfrared conditions can increase the parametric bandwidth dramatically.