Fig. 1. Configuration of generation of negative first-order fs pulsed CVB. Any other orders can be generated by inserting the VR and 1/2λ plates. The blue arrows in the subgraph are the direction of the VR’s fast axis, and the black ones depict polarization of generated CVBs.

Fig. 2. Detection of output fs pulsed CVBs. (a)–(d) polarization distribution of the first, second, third, and fourth-order fs pulsed CVBs, (e)–(h) the intensity distribution of CVBs, which are generally similar and donut-shaped but with different radius ratios, (i)–(l) petal intensity distribution of CVBs after a polarizer.

Fig. 3. Petal intensity distribution after the polarizer with different polarization angles (θ).

Fig. 4. (a) Time domain comparison and (b) optical spectrum of the input beam and generated CVBs. The pulse is stretched by several fs for each optical component, and it only shows a slight difference in the spectral profile.

Table 1. Experimental Pulse Statistics of the Original and Generated Beams