The purpose of this study is to collect data on laser ballon (2nd gen) systems for catheter ablation for AF, in order to determine the safety and the efficacy of this technique.

Moreover, the investigators aim to determine the short and long term outcomes of pulmonary vein isolation evaluating arrhythmia recurrence, especially using continuous rhythm monitoring with implantable loop recorders (ILR).

LIGHT-AF is an observational, multicentric study designed to collect pre-procedural, procedural and follow-up data of consecutive patients that underwent catheter ablation for AF with laser ballon (2nd gen system). A number of 3 enrolling centers is estimated with an overall number of about 100 patients. A minimal follow-up of 3 months is required before analyzing clinical outcomes. The data analysis will focus on implant outcomes and early, mid and long-term recurrence of AF, evaluated with intracardiac rhythm monitoring.

Inclusion Criteria:

• Age >/= 18 years
• Patients with paroxysmal, persistent or long-standing persistent AF
• Patients able to provide written informed consent or have informed consent as provided by a legal representative

Exclusion Criteria:

• Age < 18 years
• Patients unable or unwilling to receive oral anticoagulation

Patients >/= 18 years, with paroxysmal or persistent AF, that met the indications provided by international guidelines to undergo catheter ablation for AF as standard of care.