Intense broadband optical-vortex pulses generation using a hollow core fiber

Lei Lin; Peng Wang; Jun Liu

doi:10.1117/12.2502624

5 November 2018 Intense broadband optical-vortex pulses generation using a hollow core fiber

Lei Lin, Peng Wang, Jun Liu

Proceedings Volume 10811, High-Power Lasers and Applications IX; 108111B (2018) https://doi.org/10.1117/12.2502624
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Intense broadband optical-vortex pulses are expected to introduce new phenomena in nonlinear optical physics. We experimentally demonstrate the acquirement of about 500μJ, 220nm bandwidth (650nm – 870nm), and 16fs vortex ultrashort pulses by using a hollow fiber compressor. The Gaussian beam from a Ti:sapphire laser system at 800nm/50fs is transformed into vortex beam by using a spiral phase plate (SPP) firstly. Then, the narrowband optical vortex beam is spectrally broadened based on SPM in a 50-cm long hollow core fiber (HCF) filled with Ar at 0.5 bar, which is dispersion compensated using chirped mirrors. The total pulse energy transform efficiency is up to 56%. It is also found that orbital angular momentum (OAM) can be transferred to the newly generated spectral components by SPM effect..

Citation Download Citation

Lei Lin, Peng Wang, and Jun Liu "Intense broadband optical-vortex pulses generation using a hollow core fiber", Proc. SPIE 10811, High-Power Lasers and Applications IX, 108111B (5 November 2018); https://doi.org/10.1117/12.2502624

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