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You don't stop this type of craft, it's strictly accelerate and coast type of thing.

Also note that "solar sail" is a bit misleading, the (now apparently dead) Breakthrough Starshot design was a big reflector "sail" in space and very many lasers on Earth to power it, it's not actually driven by a stellar wind directly.

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This suggests ejecting a secondary mirror in front of the craft to reflect light to brake the original craft: https://arxiv.org/pdf/1604.01356:

"...or by ejecting a reflector that is then used as a braking system (similar to thrust reversal on jets) but this only works if the payload is still within illumination range of the primary laser system"

Flipping the sail around would probably be the lightest option, though tricky because the larger sail designs would not be rigid.

Solar sails aren't powered by solar wind but by light reflecting off like the probe. But the probe would be powered by laser so not really "solar" sail. Light sail is the generic term.

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