Back to results
US 2020/0025627 A1Published application
Multi-photon wavefront sensor, methods, and applications
AssigneeCornell University
InventorsChris Xu, David Sinefeld, Fei Xia
Life of this patent
Estimating the term…
Abstract
A multi-photon wavefront sensor system and method. The system includes a Shack-Hartmann wavefront sensor and a laser excitation source configured to emit a plurality of laser pulses at a wavelength in the near-infrared range, wherein the plurality of laser pulses are configured to induce multi-photon absorption in a detector material of the Shack-Hartmann wavefront sensor.
Claims20
A multi-photon wavefront sensor system, comprising:
- a Shack-Hartmann wavefront sensor;
- and
- a laser excitation source configured to emit a plurality of laser pulses at a wavelength in the near-infrared range, wherein the plurality of laser pulses are configured to induce multi-photon absorption in a detector material of the Shack-Hartmann wavefront sensor.
A multi-photon wavefront sensor system, comprising:
- a Shack-Hartmann wavefront sensor;
- and
- a fiber laser excitation source configured to emit a plurality of laser pulses at a wavelength in the near-infrared range and comprising approximately 70-380 fs at approximately a 4 MHz frequency, wherein the plurality of laser pulses are configured to induce multi-photon absorption in a detector material of the Shack-Hartmann wavefront sensor;
- wherein a depth of a device active layer for generation and detection of multi-photon photocurrent in the Shack-Hartmann wavefront sensor is larger than an axial spot size of a spot generated from a wavefront tilt by the Shack-Hartmann wavefront sensor.
1 more element
A method for sensing a wavefront, comprising the steps of:
- emitting, by a laser excitation source, a plurality of laser pulses at a wavelength in the near-infrared range;
- inducing, by the plurality of laser pulses, multi-photon absorption in a detector material of a Shack-Hartmann wavefront sensor.
Dependencies are inferred from the claim text.