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

IPC: G02F1/35 ,  G02F1/39

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.

公开(公告)号：US20240348015A1

公开(公告)日：2024-10-17

申请号：US18612461

申请日：2024-03-21

Applicant: California Institute of Technology

Inventor： Alireza Marandi ,  Luis M. Ledezma ,  Louise E. Schul ,  Selina Zhou

IPC: H01S5/183 ,  H01S5/04 ,  H01S5/20

CPC classification number: H01S5/18327 ,  H01S5/041 ,  H01S5/2018

Abstract: A device including a chip including a photonic integrated circuit comprising an external cavity for a source of electromagnetic radiation; the source of electromagnetic radiation attached to a top surface of the chip, the source comprising a semiconductor active region comprising, or coupled to, an output for the electromagnetic radiation, wherein the output is oriented to emit the electromagnetic radiation into the top surface in an emission direction that is inclined with respect to a plane of propagation of the electromagnetic radiation in the external cavity; and a coupler coupling the active region to the external cavity via the top surface to integrate the external cavity with the active region. The coupler partially couples the electromagnetic radiation outputted from the active region to the external cavity, and feedback from the external cavity to the active region.