Multi-stage pulse compression by use of cascaded quadratic nonlinearity

✍ Scribed by Guoqiang Xie; Dongfang Zhang; Liejia Qian; Heyuan Zhu; Dingyuan Tang

• Book ID: 103872977
• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 489 KB
• Volume: 273
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2006.12.011

✦ Synopsis

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 $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 $30 fs may be obtained by three-stage compression. Pulse compression performances with BiBO and BBO crystals are compared and discussed finally.