ACHROMATIC PHASE MATCHING FOR 2ND HARMONIC-GENERATION OF FEMTOSECOND PULSES
ACHROMATIC PHASE MATCHING FOR 2ND HARMONIC-GENERATION OF FEMTOSECOND PULSES
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DOI：
10.1109/3.40630
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发表时间：
1989-12-01
影响因子：
2.5
通讯作者：
MARTINEZ, OE
中科院分区：
文献类型：
--
作者：
MARTINEZ, OE
提出了一种在相位匹配条件下，通过调整频移的高阶项来增加相位匹配带宽的方案。这是通过引入光谱角色散以使不同的光谱分量以其相位匹配角传播来实现的。这相当于取消了群速度不匹配。讨论了描述角色散要求的方程，并将其应用于I型相位匹配的特殊情况。显示了一种可能的实验装置，它将满足所需的所有条件。
A scheme is proposed by which the phase matching bandwidth can be increased by adjusting higher-order terms in frequency shift in the phase-matching condition. This is achieved by introducing a spectral angular dispersion so that the different spectral components propagate at their phase-matching angles. This is equivalent to canceling the group velocity mismatch. The equations describing the requirements on the angular dispersion are discussed and applied to the particular case of type I phase matching. A possible experimental setup is shown that would meet all the conditions required.<>