303 citations · 510 across the 12 of their papers we have counts for
12 papers
Optimal mode configuration for multiple phase-matched four-wave mixing processes
Erin M. Knutson, Jon D. Swaim, Sara Wyllie +1
We demonstrate an unseeded, multimode four-wave mixing process in hot Rb vapor, using two pump beams of the same frequency that cross at a small angle. This results in the s…
Faster light with competing absorption and gain
Jon D. Swaim, Ryan T. Glasser
We experimentally investigate the propagation of optical pulses through a fast-light medium with competing absorption and gain. The combination of strong absorption and optical amp…
Multi-mode four-wave mixing with a spatially-structured pump
Jon D. Swaim, Erin M. Knutson, Onur Danaci +1
We demonstrate a new four-wave mixing (4WM) geometry based on structured light. By utilizing near-field diffraction through a narrow slit, the pump beam is asymmetrically structure…
Causality and information transfer in simultaneously slow- and fast-light media
Jon D. Swaim, Ryan T. Glasser
We demonstrate the simultaneous propagation of slow- and fast-light optical pulses in a four-wave mixing scheme using warm potassium vapor. We show that when the system is tuned su…
Squeezed-twin-beam generation in strongly absorbing media
Jon D. Swaim, Ryan T. Glasser
In this Letter we experimentally demonstrate the generation of squeezed, bright twin beams which arise due to competing gain and absorption, in a medium that is overall transparent…
Atomic vapor as a source of tunable, non-Gaussian self-reconstructing optical modes
Jon D. Swaim, Kaitlyn N. David, Erin M. Knutson +3
In this manuscript, we demonstrate the ability of nonlinear light-atom interactions to produce tunably non-Gaussian, partially self-healing optical modes. Gaussian spatial-mode lig…
Tapered nanofiber trapping of high-refractive-index nanoparticles
Jon D. Swaim, Joachim Knittel, Warwick P. Bowen
A nanofiber-based optical tweezer is demonstrated. Trapping is achieved by combining attractive near-field optical gradient forces with repulsive electrostatic forces. Silica-coate…
Back-scatter based whispering gallery mode sensing
Joachim Knittel, Jon D. Swaim, David L. McAuslan +2
Whispering gallery mode biosensors allow selective unlabelled detection of single proteins and, combined with quantum limited sensitivity, the possibility for noninvasive realtime…
Detection of Nanoparticles with a Frequency Locked Whispering Gallery Mode Microresonator
Jon D. Swaim, Joachim Knittel, Warwick P. Bowen
We detect 39 nm x 10 nm gold nanorods using a microtoroid stabilized via the Pound-Drever-Hall method. Real-time detection is achieved with signal-to-noise ratios up to 12.2. These…
Cavity Optomechanical Magnetometer
S. Forstner, S. Prams, J. Knittel +6
A cavity optomechanical magnetometer is demonstrated where the magnetic field induced expansion of a magnetostrictive material is transduced onto the physical structure of a highly…
Detection limits in plasmonic whispering gallery mode biosensors
Jon D. Swaim, Joachim Knittel, Warwick P. Bowen
We analyze a whispering gallery mode biosensor with a metallic nanorod bound to its surface. It is found that a localized surface plasmon resonance in the nanorod can reduce the op…
Yield enhancement in whispering gallery mode biosensors: microfluidics and optical forces
Kiran Khosla, Jon D. Swaim, Joachim Knittel +1
A microfluidic whispering gallery mode (WGM) biosensing system is proposed for enhanced delivery and detection of target molecules. A microtoroid resonator coupled to a tapered opt…