JILA X317

Abstract: High harmonic generation is a unique short wavelength light source with high spatial and temporal coherence, enabling ultrafast pump-probe studies of dynamics in chemical reactions, biological systems, and technologically relevant materials. For soft x-ray generation, this requires ultrafast lasers operating at high pulse energy and high repetition rate in the mid-infrared spectral region, which remain a challenging technology.

Abstract:

I’ll discuss two experimental results that utilize the collective emission of strontium atoms within a cavity, aimed at advancing atomic clock technology. In our first investigation, we employ superradiant pulses from the cavity mode as a fast and directed atomic population readout, mapping out a unique Ramsey spectroscopic lineshape and demonstrating the potential for multiple readouts within a single experimental cycle. In our second investigation, we extend these pulses using an incoherent repumping scheme, achieving steady-state lasing for over a millisecond on the kHz tr

Reception in the h-bar following the defense. 

Reception in the h-bar following the defense.

-Postdoc Group Panel-"Insert Your Funding Agency" Proposal Panel-Learn how to navigate the many different funding opportunities for postdocs-Speakers: JILA Fellows Heather Lewandowski and Ann-Marie Madigan-X317-Snacks will be provided!

Abstract: The Advanced LIGO detectors operate at a regime where quantum uncertainty imposes a fundamental limitation to sensitivity in the form of quantum shot noise and quantum radiation pressure noise. During the last gravitational wave observing run O3, the LIGO and Virgo detectors used quantum states of light known as squeezed states of light in order to reduce high frequency quantum shot noise.

Abstract: Mechanical resonators based on stressed silicon nitride have both exemplary optical and mechanical properties. Through targeted shaping of the resonator geometry, the dissipative properties of these resonators can be enhanced, yielding micromechanical devices that maintain coherence for up to billions of oscillation periods.

For Zoom passcode information, please contact Lauren Mason at masonlw@colorado.edu.

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