A surgical probe can include an outer cannula； an inner cannula, rotatably disposed inside the outer cannula； a rotational scanner, disposed at an end of the inner cannula and configured to receive a light beam from a delivery fiber and to scan the light beam along a loop； and an anamorphic optical element, disposed at an end of the outer cannula and configured to receive the light beam scanned along the loop and to output the light beam along an anisotropically compressed loop. A corresponding method can include providing a light beam by a light source； coupling the light beam to a rotational scanner at an end of an inner cannula； scanning the light beam by the rotational scanner along a loop； and receiving the light beam scanned along the loop by an anamorphic optical element and outputting the light beam along an anisotropically compressed loop to a target.
