I’m a juggling enthusiast, and I have to say that I’ve never seen one of those before. You said that the picture was of your circus instructor doing a trick with his, so why not ask him where he got his? Good luck in your search!
according the the wiki, a danish artist, see link above, invented a circus act with a pole, it is a relatively new prop, bu the pole is attached to the ground and then to a rope to the ceiling, the pole hanging at an angle.
I didn’t find any pictures of the “Danish Pole” as it is called, but his site if impressive!
No, the pole I’m speaking of isn’t attached to the ground, nor to the ceiling (nice idea though), like in the picture of my instructor, you climb it, jump with it, anything you can imagine.