A femtosecond waveform transfer technique using type II second harmonic generation
A femtosecond waveform transfer technique using type II second harmonic generation
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DOI：
10.1109/jqe.2004.830192
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发表时间：
2004-06
影响因子：
2.5
通讯作者：
Haifeng Wang;A. Weiner
中科院分区：
文献类型：
--
作者：
Haifeng Wang;A. Weiner
我们提出了一种新型的II型二次谐波（SHG）波形频率转换技术。我们从理论上研究和实验证明了II型SHG在三硼酸锂（LBO）晶体中从800到400 nm波长的飞秒波形转移。输出二次谐波（SH）波形是输入基波的临时放大或压缩版本，取决于实验配置。实验表明，该技术不仅可以传递基波的强度分布，而且可以传递相位分布。这项技术显示了可编程生成的形状超快光波形的前景，其形状低至紫外线范围，而直接脉冲整形是具有挑战性的。
We present a novel waveform frequency conversion technique by type II second harmonic generation (SHG). We have theoretically studied and experimentally demonstrated femtosecond waveform transfer from 800 to 400 nm wavelength by type II SHG in a lithium triborate (LBO) crystal. The output second harmonic (SH) waveform is a temporally magnified or compressed version of the input fundamental waveform, depending on the experimental configuration. Our experiments demonstrate that this technique can transfer not only the intensity profiles of the fundamental waveform, but also the phase profiles. This technique shows promise for programmable generation of shaped ultrafast optical waveforms down to the UV range, where direct pulse shaping is challenging.