Title: Long-path formation in a deformed microdisk laser,
Abstract: An asymmetric resonant cavity can be used to form a path that is much longer
than the cavity size. We demonstrate this capability for a deformed microdisk
equipped with two linear waveguides, by constructing a multiply reflected
periodic orbit that is confined by total internal reflection within the
deformed microdisk and outcoupled by the two linear waveguides. Resonant mode
analysis reveals that the modes corresponding to the periodic orbit are
characterized by high quality factors. From measured spectral and far-field
data, we confirm that the fabricated devices can form a path about 9.3 times
longer than the average diameter of the deformed microdisk.