Back to results
US 2023/0107506 A1Published application
Coherent high speed optical valve
AssigneeCalifornia Institute of Technology
InventorsJunyi Shan, Mengxing Ye, Leon Balents, David Hsieh
Life of this patent
Estimating the term…
Abstract
A control circuit for controlling a timing, a pulse length, a valve electric field having the certain magnitude, and a pulse envelope of the valve electric field, so as to coherently control a response of a region of an insulator to a probe electric field, the response controlled with a temporal resolution equal to the pulse length and matching the pulse envelope.
Claims21
An optical valve, comprising:
- an insulator comprising:
- a first state and a second state separated in energy by a bandgap and coupled by a first dipole allowed transition;
- and
- a nonlinear susceptibility associated with the first dipole allowed transition;
- a source of a valving electric field coupled to a region of the insulator, the valving electric field comprising:
- a first frequency corresponding to a photon energy smaller than the bandgap and any in gap energy corresponding to a second dipole allowed transition within the bandgap;
- and
- a magnitude selected for driving a virtual transition between the first state and the second state under Floquet conditions that increase the bandgap by an amount proportional to a square of the magnitude;
- and
- a control circuit controlling a timing of the valve electric field, a pulse length of the valve electric field, the magnitude, and a pulse envelope of the valve electric field so as to coherently control a response of the region of the insulator to a probe electric field, the response controlled with a temporal resolution equal to the pulse length and matching the pulse envelope.
7 more elements
A device, comprising:
- a control circuit for controlling a timing of a valve electric field, a pulse length of the valve electric field, a magnitude, and a pulse envelope of the valve electric field incident with a probe electric field on a region of an insulator, so as to coherently control a response of the region of the insulator to the probe electric field such that the response is controlled with a temporal resolution equal to the pulse length and matching the pulse envelope.
(canceled)
A method of operating an optical valve, comprising:
- at least providing, selecting, or controlling a timing of a valve electric field, a pulse length of a valve electric field, a magnitude of the valve electric field, and a pulse envelope of the valve electric field incident with a probe electric field on an insulator, so as to coherently control a response of the insulator to the probe electric field such that the response is controlled with a temporal resolution equal to the pulse length and matching the pulse envelope, wherein:
- the insulator comprises:
- a first state and a second state separated in energy by a bandgap and coupled by a first dipole allowed transition;
- and
- a nonlinear susceptibility associated with the first the dipole allowed transition;
- and
- the valve electric field comprises:
- a first frequency corresponding to a photon energy smaller than the bandgap and any in gap energy corresponding to a second dipole allowed transition within the bandgap;
- and
- the magnitude is selected for driving a virtual transition between the first state and the second state under Floquet conditions that increase the bandgap by an amount proportional to a square of the magnitude.
7 more elements
Dependencies are inferred from the claim text.