• Photonics Research
  • Vol. 9, Issue 3, 357 (2021)
Yongguang Zhao1、2、*, Li Wang2, Weidong Chen2, Pavel Loiko3, Xavier Mateos4, Xiaodong Xu1, Ying Liu1, Deyuan Shen1, Zhengping Wang5, Xinguang Xu5, Uwe Griebner1, and Valentin Petrov1
Author Affiliations
  • 1Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
  • 2Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, 12489 Berlin, Germany
  • 3Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252 CEA-CNRS-ENSICAEN, Université de Caen, Caen 14050, France
  • 4Universitat Rovira i Virgili (URV), Física i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA), Marcel.li Domingo 1, 43007 Tarragona, Spain
  • 5State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China
  • show less
    DOI: 10.1364/PRJ.413276 Cite this Article Set citation alerts
    Yongguang Zhao, Li Wang, Weidong Chen, Pavel Loiko, Xavier Mateos, Xiaodong Xu, Ying Liu, Deyuan Shen, Zhengping Wang, Xinguang Xu, Uwe Griebner, Valentin Petrov. Structured laser beams: toward 2-μm femtosecond laser vortices[J]. Photonics Research, 2021, 9(3): 357 Copy Citation Text show less

    Abstract

    Structured ultrashort-pulse laser beams, and in particular eigenmodes of the paraxial Helmholtz equation, are currently extensively studied for novel potential applications in various fields, e.g., laser plasma acceleration, attosecond science, and fine micromachining. To extend these prospects further, in the present work we push forward the advancement of such femtosecond structured laser sources into the 2-μm spectral region. Ultrashort-pulse Hermite– and Laguerre–Gaussian laser modes both with a pulse duration around 100 fs are successfully produced from a compact solid-state laser in combination with a simple single-cylindrical-lens converter. The negligible beam astigmatism, the broad optical spectra, and the almost chirp-free pulses emphasize the high reliability of this laser source. This work, as a proof of principle study, paves the way toward few-cycle pulse generation of optical vortices at 2 μm. The presented light source can enable new research in the fields of interaction with organic materials, next generation optical detection, and optical vortex infrared supercontinuum.
    ΔΨ=±[π/2+arctan(Z/ZR1)][arctan(Z/ZR+1)].

    View in Article

    τP|GDD|/(δLEP).

    View in Article

    Yongguang Zhao, Li Wang, Weidong Chen, Pavel Loiko, Xavier Mateos, Xiaodong Xu, Ying Liu, Deyuan Shen, Zhengping Wang, Xinguang Xu, Uwe Griebner, Valentin Petrov. Structured laser beams: toward 2-μm femtosecond laser vortices[J]. Photonics Research, 2021, 9(3): 357
    Download Citation