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期刊论文
Theoretical analysis of noncollinear phase-matched optical parametric generation in BBO crystal☆
Optics & Laser Technology 33(2001)249-254,-0001,():
In this article we propose a theoretical treatment of noncollinear phase-matched femtosecond parametric interaction process pumped by ultrashort optical pulses, and investigated the pulse characteristics of OPG in BBO crystal. The results show that the major factors, which a8ect the optical parametric conversion coe9cient and durations of the pulses, are the group velocity mismatch and the phase mismatch among the three ultra-short pulses. In addition, the material dispersion can cause the durations of the pulses to increase when pump pulse is below 20 fs, and its in:uence becomes more obvious at low pump intensity.
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