Creating antimatter via lasers has been theoretically proposed, but it remains highly speculative and faces significant challenges. To create antimatter, a particle that has the same mass but the opposite charge of its corresponding matter particle, an extremely high energy input is required. Lasers, while capable of producing intense and focused light, do not provide the necessary energy levels believed to be required for antimatter production.

For example, to create an electron's antiparticle, a positron, it is estimated that a laser would need to focus energy equivalent to thousands of trillions of electronvolts (TeV) on a very small target. This is far beyond the capabilities of current laser technology and would require lasers of enormous size and power consumption.

Additionally, even if such a powerful laser could be developed, the efficiency of the antimatter production process is likely to be extremely low, making it impractical for large-scale production.

Currently, antimatter is primarily produced through particle accelerators, which use powerful electric fields to accelerate particles to high energies and collide them to produce pairs of matter and antimatter particles. This method, while still highly complex and energy-intensive, has been shown to be more feasible and efficient than using lasers for antimatter creation.

In conclusion, while the concept of using lasers for antimatter creation has been proposed, it remains a highly speculative idea that faces significant practical and theoretical challenges. At the moment, particle accelerators are the primary means for producing antimatter.