Here are a few possibilities you might be thinking of:
* The "Illusionary Pokémon" episode: This episode features a Pokemon called "Illusionary Pokémon" which uses its power to create illusions and trick people. It might be what you're thinking of, but it doesn't involve a professor creating things from holograms.
* The "Mystery Dungeon" series: This series of games and films involves exploring dungeons filled with Pokemon and solving puzzles. Some of these dungeons have holograms or other illusions as part of the gameplay, but again, it's not a professor creating them.
* The "Pokémon Ranger" series: This series involves using a device called the Capture Styler to catch Pokemon by drawing circles around them. While it uses technology, it doesn't involve holograms or professors.
If you remember any other details about the episode or movie you're looking for, please let me know, and I'll try my best to help you find it.