Multi-stage pulse compression by use of cascaded quadratic nonlinearity

作者：Xie Guoqiang; Zhang Dongfang; Qian Liejia^*; Zhu Heyuan; Tang Dingyuan

来源：Optics Communications, 2007, 273(1): 207-213.

DOI：10.1016/j.optcom.2006.12.011

• pulse compression
• frequency conversion
• cascaded nonlinearity

In this paper, the multi-stage compression of picosecond pulses by cascaded quadratic nonlinearity is studied theoretically, and the dependence of pulse compression on phase-mismatch, laser intensity, and crystal characteristics has been discussed in detail. We demonstrate that the multi-stage pulse compression is much more efficient than the single-stage with a same total crystal length. Pulses as short as similar to 150 fs can be generated by compressing 30-ps initial pulses in a two-stage configuration under the realistic crystal and laser conditions, and shorter pulses of similar to 30 fs may be obtained by three-stage compression. Pulse compression performances with BiBO and BBO crystals are compared and discussed finally.

• 出版日期2007-5-1
• 单位复旦大学; 南阳理工学院