Session Overview |
Tuesday, May 28 |
13:00 |
Bragg soliton dynamics on an ultra-silicon-rich nitride chip
* Dawn Tan, Singapore University of Technology and Design, Sierra LeoneSingapore Ju-Won Choi, Singapore University of Technology and Design Byoung-Uk Sohn, Singapore University of Technology and Design Ezgi Sahin, Singapore University of Technology and Design Doris Ng, A*STAR Institute of Microelectronics Xavier Chia, Singapore University of Technology and Design George Chen, Singapore University of Technology and Design Kenny Ong, Singapore University of Technology and Design Hongwei Gao, Singapore University of Technology and Design Recent developments in Bragg soliton dynamics on a chip, including gap soliton-based tunable slow light, optical parametric Bragg amplification and pure quartic Bragg solitons are reported. |
13:35 |
Microresonator Optical Frequency Combs: thermal noise, precision, and progress toward low-noise signals and optical clockwork
* Tara Drake, University of New Mexico, United States of America Kerr-microresonator optical frequency combs are important platforms for low-noise signal generation and precision metrology. Thermodynamic fluctuations originating in the microresonator material couple to the microcomb light and limit the precision of comb-enabled measurements. In this talk, I will provide an overview of microcomb stabilization and use in low-noise time and frequency applications, our current understanding of the connection between material thermal fluctuations and microcomb properties, and techniques to reduce thermal noise on the comb light. |
14:00 |
Linear feedback actuator of the repetition rate frequency of soliton microcombs using a C-band auxiliary laser
* Tanvir Mahmood, Army Research Laboratory, United States of America James P. Cahill, Army Research Laboratory, United States of America Patrick Sykes, Army Research Laboratory, United States of America Logan Courtright, University of Maryland, Baltimore County, United States of America Lue Wu, California Institute of Technology, United States of America Kerry J. Vahala, California Institute of Technology, United States of America Curtis R. Menyuk, University of Maryland, Baltimore County, United States of America Weimin Zhou, Army Research Laboratory, United States of America Soliton microcomb formation has been demonstrated using pump and auxiliary lasers, all operating in C-band, while being launched in orthogonal polarizations. The repetition rate frequency deviation of the generated microcomb has been investigated by varying the frequency of the auxiliary laser. We find that the repetition rate frequency varies linearly as the auxiliary laser frequency varies, which can thus be utilized in principle as a linear active feedback actuator for stabilizing the soliton microcomb. |
14:15 |
Efficient FWM-based Wavelength Conversion in Deuterated Ultra-Silicon-Rich Nitride (USRN:D)
* Xavier Chia, Singapore University of Technology and Design, Sierra LeoneSingapore Hongwei Gao, Singapore University of Technology and Design, Sierra LeoneSingapore * Kenny Ong, Singapore University of Technology and Design, Sierra LeoneSingapore George Chen, Singapore University of Technology and Design Ju-Won Choi, Singapore University of Technology and Design, Sierra LeoneSingapore Jia Sheng Goh, Institute of Microelectronics (IME), Agency for Science, Technology and Research (A*STAR), Sierra LeoneSingapore Doris Ng, Institute of Microelectronics (IME), Agency for Science, Technology and Research (A*STAR), Sierra LeoneSingapore Dawn Tan, Singapore University of Technology and Design, Sierra LeoneSingapore Since the initial demonstration of deuterated silicon nitride (SiN:D) devices in 2017, SiN:D devices have been employed in a number of works including frequency comb generation and ultra-low-loss devices. In this work, we demonstrate highly nonlinear devices fabricated on deuterated ultra-silicon-rich nitride (USRN:D). Waveguides with nonlinear parameters as high as 166 W-1m-1 are used as wavelength convertors, attaining a conversion efficiency of -43.2 dB over a waveguide length of just 1 cm. |
14:30 |
Mid-Infrared Optical Parametric Amplifier for Time and Angle resolved photoemission spectroscopy at ALLS
* Gaëtan Jargot, INRS, Canada Adrien Longa, INRS, Canada Dario Armanno, INRS, Canada Benson Frimpong, INRS, Canada Fabio Boschini, INRS, Canada François Légaré, INRS, Canada The Advanced Laser Light Source (ALLS) laboratory provides high-repetition-rate ultrashort light pulses using ytterbium laser technology. Recently, we have developed a novel end-station called time- and angle-resolved photoemission (TR-ARPES) to explore the rapid electron dynamics in quantum materials when subjected to intense optical excitation in the near- and mid-infrared range. These intense pulses are generated using our in-house-built optical parametric amplifier (OPA) |
14:45 |
Modeling and simulation of metalens-based compressed ultra-compact femto-photography
* Miguel Marquez, Institut national de la recherche scientifique, Canada Giacomo Balistreri, Institut national de la recherche scientifique, Canada Roberto Morandotti, Institut national de la recherche scientifique, Canada Luca Razzari, Institut national de la recherche scientifique, Canada Jinyang Liang, Institut national de la recherche scientifique, Canada Compressed ultrafast photography (CUP), employing a chirped ultrashort pulse for active illumination, has emerged as a potent single-shot ultrafast imaging modality for numerous areas of study to image non-repetitive time-evolving events at up to hundreds of trillions of frames per second. However, the conventional configurations and bulky size limit its application scopes. To overcome these limitations, we propose a super-dispersive metalens-based computational ultrafast imaging modality, named single-shot compressed ultra-compact femto-photography (CUF). CUF’s feasibility is verified via numerical simulation using two synthetic scenes: the propagation of a terahertz Cherenkov wave and an ultrafast beam sweeping across a surface. |
15:00 |
Angle and polarization insensitive mid-infrared optical filters using dense array of resonant cavities
* Shivashankar Vangala, Air Force Research Laboratory, Sensors Directorate, United States of America Matthew Klein, Air Force Research Laboratory, Sensors Directorate Joshua Hendrickson, Air Force Research Laboratory, Sensors Directorate Ivan Avrutsky, Wayne State University We present the design and experimental verification of angle and polarization insensitive mid-infrared filters based on dense arrays of dielectric resonators. The transmission characteristics of these filters are practically constant over a wide range of incident angles for both 1D and 2D designs. The 2D structures with azimuthal symmetry show the transmission characteristics being insensitive to perpendicular polarization states. Design optimization and the integration of these resonators with IR detectors offer improved capability for IR search and track applications. |