Here is the conclusion of a clinical trial that was published 1.5 years ago. Things might have changed since them. This was reported by the NIH (National Institute of Health).
Conclusion: Focal laser ablation is a promising technique for treatment of clinically localized PCa and should ideally be performed within approved clinical trials. So far, only few studies have reported on FLA and further validation with longer follow-up is mandatory before widespread clinical implementation is justified.