Publications by Arslan Sajid Raja

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The present invention concerns an energy dispersion calibration method for calibrating an electron spectrometer of an electron spectrometer system including at least one electron emission source, electron optics and the electron spectrometer. The method co ...

Nonlinear wave mixing in optical microresonators new perospects for compact optical frequency combs with many promising applications. We demonstrate simultaneous generation of multiple frequency combs from a single optical microresonator and a single conti ...

We demonstrate piezoelectric actuators monolithically integrated on ultralow-loss Si3N4 waveguides. Varying the voltage applied on the actuator allows microresonator tuning, and to initiate, switch, stabilize and tightly phase lock the single soliton micro ...

Since their discovery microresonator-based frequency combs have drawn a lot of interest due to their compact form factor and potential for integration. We report on the recent progress regarding dissipative Kerr solitons generated from photonic chip-based ...

The rapidly maturing integrated Kerr microcombs show significant potential for microwave photonics. Yet, state-of-the-art microcomb-based radiofrequency filters have required programmable pulse shapers, which inevitably increase the system cost, footprint, ...

We couple free electrons with nonlinear optical states and frequency combs in photonic chip-based microresonators. Intracavity nonlinear dissipative structures including optical solitons imprint unique fingerprints in electron spectra and their Ramsey inte ...

We demonstrate reconfigurable microwave photonic filters based on two-soliton microcombs. The filter passbands can be reconfigured inherently via the various angles between two solitons of microresonator, without involving programmable pulse shapers. (C) 2 ...

We establish a frequency link across the microwave, optical, and free-electron domains by a photonic chip-based electron phase modulator driven by a continuous-wave laser locked to a fully stabilized optical frequency comb. ...

We report the first observation of backward stimulated Brillouin scattering in fully cladded Si3N4 waveguides. The intrinsic Brillouin gain at 25 GHz and the photoelastic constant are estimated to be 4 × 10−13 m/W and |p12| = 0.047 ± 0.004 respectively. ...

Optical technologies could enable fast and power-efficient networks for data centers. Here, the authors report Si3N4 microcomb based ultrafast photonic switching to provide enhanced performance for data center applications. ...

We demonstrated a packaged optomechanical accelerometer with resolution of 850ng. The resonance of a 4 million Q Si3N4 microring resonator is modulated by the stress in springs of a released milligram proof mass upon acceleration. ...

Arslan Sajid Raja

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Electron spectrometer calibration method

Multiplexing Soliton-Combs in Optical Microresonators

Monolithic piezoelectric control of soliton microcombs

Dissipative Kerr solitons in photonic chip-based microresonators

Reconfigurable radiofrequency filters based on versatile soliton microcombs

Free Electron Interaction with Nonlinear Optical States

Two-soliton Microcombs Enabled Reconfigurable Microwave Photonic Filters

Unifying Optical Frequency Metrology with Free-Electron Spectroscopy

Observation of stimulated Brillouin scattering in silicon nitride integrated waveguides

Ultrafast optical circuit switching for data centers using integrated soliton microcombs

A High-Resolution Photonic Integrated High Q Microresonator Based Accelerometer

Continuous-wave electron-light interaction in high-Q whispering gallery microresonators

Electrically pumped photonic integrated soliton microcomb (vol 10, 680, 2018)