Research in the Capasso Group spans the full stack of scientific procedures from pure mathematics to numerical simulations, nanofabrication, and system-level integrated devices. Projects are strongly interdisciplinary and fall loosely into the following broad directions:
In this work, we reveal a metasurface-enhanced laser that overcomes a key limitation in lasers: conjugate symmetry of light’s angular momentum. We demonstrate new high-purity orbital angular momentum (OAM) states with quantum numbers reaching 100 and non-...
Frequency combs are widely-used, high-precision tools for measuring and detecting different frequencies — a.k.a. colors — of light. Unlike conventional lasers, which emit a single frequency, these lasers emit multiple frequencies in lockstep, evenly spaced to resemble the teeth of a comb. We study in particular...