The GRENOUILLE idea can be extended to longer (picosecond) pulses. But it gets tricky. Depending on how you orient the Fresnel biprism, the beams either cross inside it or undergo total internal reflection inside it and are reflected back to the laser! So we had to be more creative about it. The trick is to forget the biprism and instead give the SHG crystal a pentagonal shape.
So the picosecond GRENOUILLE is even simpler than the femtosecond one! It's just three elements, a cylindrical lens, the thick pentagonal crystal, and another lens before a camera. It works very well and can measure very complex pulses. But it's limited to a short wavelength range.