  Numerous techniques have been demonstrated for effective generation of
orbital angular momentum-carrying radiation, but intracavity generation of
continuously tunable pulses in the femtosecond regime remains challenging. Even
if such a creation was realized, the generated pulses, like all pulses in
reality, are complex and transitory objects that can only be comprehensively
characterized via multidimensional spaces. An integrated lasing system that
generates pulses while simultaneously quantifies them can achieve adaptive
pulse tailoring. Here, we report a femtosecond pulse scope that unifies vector
vortex mode-locked lasing and vectorial quantification. With
intracavity-controlled Pancharatnam-Berry phase modulation, continuous and
ergodic generation of spirally polarized states along a broadband higher-order
Poincare sphere was realized. By intrinsically coupling a two-dimensional
polarization-sensitive time-scanning interferometer to the laser,
multidimensional spatiotemporal features of the pulse were further visualized.
The proposed methodology paves the way for design optimization of ultrafast
optics by integrating complex femtosecond pulse generation and structural
customization, facilitating its applications in optical physics research and
laser-based manufacturing.
