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Hall Group

JILA, Boulder - US United States of America
My research interests include laser stabilization and precise scan techniques using interferometry and/or heterodyne techniques, amplitude stabilization near the "photon-shot-noise" level with classical electro-optical methods, and "squeezed" beams of sub-shot-noise level or correlated photons produced in nonlinear interactions. I pursue continuous-wave approaches for application in both gravity-wave antennas and measurement of magnetically induced birefringence of the vacuum. Optical atomic clocks based on a strontium "atomic fountain" will allow "ultra-resolution" determination of linewidths < 10 Hz. A new modulation detection scheme permits cavity-enhanced nonlinear spectroscopy that provides unprecedented sensitivity (<10^-12 absorption) using molecular overtone transitions in the near-visible infrared.