Quantum-dot-based measuring system and method
AssigneeShanghai University
InventorsNa Chen, Shaoying Li, Tingyun Wang, Zhenyi Chen, Shupeng Liu
Life of this patent
Estimating the term…
Abstract
A quantum-dot-based measuring system is disclosed. The quantum-dot-based measuring system includes a laser to emit excitation light, an optical fiber probe including a tail end and a tapered tip, and the tapered tip of the optical fiber probe is attached with one or more quantum dots, and the excitation light is injected from the tail end of the optical fiber probe and emitted from the tapered tip to a sample to be detected, an objective lens to collect optical signal reflected by the sample and a spectrometer to receive the optical signal.
Claims13
A quantum-dot-based measuring system comprising,
- a laser to emit excitation light;
- an optical fiber probe including a tail end and a tapered tip, wherein the tapered tip of the optical fiber probe is attached with one or more quantum dots, and wherein the excitation light is injected from the tail end of the optical fiber probe and emitted from the tapered tip to a sample to be detected,
- an objective lens to collect optical signal reflected by the sample;
- and
- a spectrometer to receive the optical signal,
- wherein the system comprises a first working mode for temperature distribution imaging in which the excitation light of the laser is spatially coupled to the objective lens, the tail end of the optical fiber probe is focused under the objective lens, the excitation light passes through the optical fiber probe to the tapered tip and excites the sample, and an obtained optical signal is collected by the optical fiber probe again and enters the spectrometer from the tail end of the optical fiber through the objective lens.
A quantum-dot-based measuring method comprising,
- emitting excitation light from a laser;
- injecting the excitation light through an optical fiber probe to a sample to be detected, wherein the optical fiber probe includes a tail end and a tapered tip, and the tapered tip of the optical fiber probe is attached with one or more quantum dots, and wherein the excitation light is injected from the tail end of the optical fiber probe and emitted from the tapered tip;
- collecting optical signal reflected by the sample at an objective lens;
- and
- receiving the optical signal at a spectrometer,
- wherein the method comprises a process for temperature distribution imaging during which the step of injecting comprises spatially coupling the excitation light of the laser to the objective lens, focusing the tail end of the optical fiber probe under the objective lens so that the excitation light passes through the optical fiber probe to the tapered tip and excites the sample, and the step of collecting comprises collecting an obtained optical signal at the optical fiber probe again, wherein the optical signal enters the spectrometer from the tail end of the optical fiber through the objective lens.
Dependencies are inferred from the claim text.