Exploiting nonlinear spectral broadening in a 400 W Yb:YAG thin-disk multipass amplifier to achieve 2 mJ pulses with sub-150 fs duration

OPTICS COMMUNICATIONS

卷:429

Article

Dannecker, Benjamin¹  Negel, Jan-Philipp¹  Loescher, Andre¹  Oldorf, Paul²  Reichel, Stefanie²  Peters, Rigo²  Graf, Thomas¹  Ahmed, Marwan Abdou¹ 

[1] Univ Stuttgart, Inst Strahlwerkzeuge IFSW, Pfaffenwaldring 43, D-70569 Stuttgart, Germany

[2] Schweisstech Lehr & Versuchsanstalt Mecklenburg V, Alter Hafen Sud 4, D-18069 Rostock, Germany

关键词: Ultrashort pulse generation;    Laser sources;    Thin-disk laser;    Pulse compression;    Ultrafast nonlinear optics;   

DOI  :  10.1016/j.optcom.2018.08.022

来源: Elsevier

【 摘 要 】

We present investigations on the extent of spectral broadening occurring during the propagation of laser pulses in a Thin-Disk Multipass Amplifier (TDMPA) with the aim to exploit this nonlinear effect for pulse compression. The demonstrated compression of 2.05 mJ-pulses to a duration of about 136 fs FWHM at an average power of 409 W and a peak power of 9 GW is in good agreement with numerical pulse propagation simulations. Our spectral broadening and compression scheme introduced additional losses below 2%, is scalable to average powers of > 1 kW with multi-mJ pulses, and strongly enhances the capabilities of ultrafast TDMPAs towards shorter pulses and higher peak powers.

【 授权许可】

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