2.3-cycle mid-infrared pulses from hybrid thin-plate post-compression at 7 W average power

OPTICS COMMUNICATIONS

卷:472

Article

Kurucz, Mate¹  Flender, Roland¹  Haizer, Ludovit¹  Nagymihaly, Roland S.¹  Cho, Wosik²  Kim, Kyung T.^2,3  Toth, Szabolcs¹  Cormier, Eric^4,5  Kiss, Balint¹ 

[1] ELI ALPS Res Inst, Dugon Ter 13, H-6720 Szeged, Hungary

[2] Inst Basic Sci, Ctr Relativist Laser Sci, Gwangju 61005, South Korea

[3] Gwangju Inst Sci & Technol, Dept Phys & Photon Sci, Gwangju 61005, South Korea

[4] Univ Bordeaux, CNRS, Lab Photon Numer & Nanosci, IOGS,UMR 5298, Rue F Mitterrand, F-33400 Talence, France

[5] Inst Univ France, 1 Rue Descartes, F-75231 Paris, France

关键词: High-power;    Mid-infrared;    Post-compression;    Thin plate compression;   

DOI  :  10.1016/j.optcom.2020.126035

来源: Elsevier

【 摘 要 】

Output pulses of a 100 kHz mid-infrared OPCPA system are post-compressed from 4.7 cycles down to 2.3 cycles by using a combination of a dielectric and a semiconductor crystal in a hybrid thin plate setup. Efficient spectral broadening is demonstrated with 11 W average input power. After compression the output power reached 6.8 W with exceptional CEP and energy stability for a several hours. The post-compressed pulses were carefully characterized in both temporal and spatial domains, resulting in 2.3-cycle temporal duration at 3.1 mu m central wavelength with a temporal Strehl ratio of 0.73 and a spatial Strehl ratio of 0.97. Thermal limitations due to multiphoton absorption of semiconductors present at this power level are explored by temperature measurements, which are supported by detailed numerical simulations. Upscaling for higher average powers was also investigated.

【 授权许可】

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