-
公开(公告)号：US20240201563A1
公开(公告)日：2024-06-20
申请号：US18543950
申请日：2023-12-18
Applicant: California Institute of Technology
Inventor： Luis M. Ledezma , Alireza Marandi , Robert M. Gray , Benjamin K. Gutierrez
CPC classification number: G02F1/39 , H01S5/0265 , H01S5/0657 , H01S5/125 , H01S5/141 , H01S5/50
Abstract: On-chip generation of coherent radiation, i.e. laser-like radiation, can be tuned over broad and/or hard-to-access wavelength regions in an integrated platform. Target spectral coverage is beyond what could be achieved with existing integrated laser systems.
-
公开(公告)号：US20240419951A1
公开(公告)日：2024-12-19
申请号：US17973118
申请日：2022-10-25
Applicant: California Institute of Technology
Inventor： Gordon H.Y. Li , Ryoto Sekine , Rajveer Nehra , Robert M. Gray , Alireza Marandi
Abstract: A device implementing a nonlinear activation function including a material having nonlinear susceptibility phase-matching a coherent nonlinear interaction involving a signal comprising a signal wavelength and a bias comprising a bias wavelength, so that (1) a first phase difference between the signal and the bias induces the interaction comprising second harmonic generation (generating a second harmonic of the bias wavelength) or sum frequency generation (generating a sum frequency of the bias and the signal, and (2) a second phase difference between the signal and the bias induces the interaction comprising parametric amplification amplifying the bias and attenuating the signal. A positive input to the nonlinear activation function is represented by the signal having an input energy and the first phase difference. A negative input is represented by second phase difference. The output is an output energy of the signal as function of the input energy.
-
公开(公告)号：US20250085607A1
公开(公告)日：2025-03-13
申请号：US18805408
申请日：2024-08-14
Applicant: California Institute of Technology
Inventor： Ryoto Sekine , Robert M. Gray , Alireza Marandi
Abstract: An on-chip pulse synthesizer including an integrated photonic chip that temporally and spectrally shapes pulses of light using primarily quadratic optical nonlinearities. Through this synthesis, the light pulses undergo temporal shortening or reshaping, spectral broadening, wavelength conversion, or a combination thereof. A key aspect of this synthesis is the mode engineering of the waveguides, which includes converting the pump source mode to the relevant mode in the nonlinear optical region and tailoring the waveguide geometry and material stack to enable dispersion-engineering as well as engineering of the phase matching for various nonlinear processes.
-
公开(公告)号：US20240402568A1
公开(公告)日：2024-12-05
申请号：US18317533
申请日：2023-05-15
Applicant: California Institute of Technology
Inventor： Robert M. Gray , Selina Zhou , Mingchen Liu , Arkadev Roy , Alireza Marandi
Abstract: A sensor including a resonator comprising a nonlinear material comprising a nonlinear susceptibility configured to convert a pump electromagnetic wave (EM) wave to a signal EM wave and an idler EM wave, wherein at least one of the pump EM wave, the signal EM wave and/or the idler EM wave is fed back through the nonlinear material to form one or more resonant EM waves. An actuator coupled to the resonator or a pump path to the resonator, controls at least one of a pump power of the pump EM wave, a detuning of the frequency modes of the resonator relative to one or more frequencies of the resonant EM waves, or a phase matching of the nonlinear material. An output of the resonator outputs one or more output EM waves comprising information about a sample coupled to the resonator.
-
-
-
Search Results
4
records
(took 0.014 seconds)
