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Array single-photon frequency up-conversion device

A conversion device and single-photon technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as field of view and spatial resolution constraints

Inactive Publication Date: 2021-01-19
重庆连芯智能科技研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, both the field of view and spatial resolution of cavity-enhanced high-efficiency image upconversion are constrained by the complex cavity structure

Method used

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  • Array single-photon frequency up-conversion device

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...

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Abstract

The invention provides an array single-photon frequency up-conversion device. The array single-photon frequency up-conversion device comprises a dichroic beam splitter, a micro-lens array, an array input coupling mirror, a PPLN crystal and an array output coupling mirror, the dichroic beam splitter is used for coupling the signal light and the pump light in space; the micro-lens array is used forsegmenting the signal light and the pump light and focusing the segmented light waves at the center of the crystal; the array input coupling mirror is used for coupling multiple paths of signal lightand pump light into the array resonant cavity; the PPLN crystal is used as a medium for nonlinear frequency conversion and has a relatively large effective nonlinear coefficient and a damage thresholdvalue; the array output coupling mirror is used for outputting sum frequency light, wherein the array input coupling mirror and the array output coupling mirror form an array resonant cavity which isused for enhancing the power of pump light in the cavity and improving the conversion efficiency; high conversion efficiency is achieved, signal light is segmented through the micro-lens array, the field angle of the signal light is increased, and multi-path high-efficiency frequency up-conversion light output is achieved in one crystal.

Description

technical field [0001] The present application relates to the technical field of nonlinear frequency up-conversion, and in particular, to an array single-photon frequency up-conversion device. Background technique [0002] Infrared or near-infrared, especially the photon wavelength in the optical communication band is in the low-loss transmission window of the atmosphere and optical fiber, and has a wide range of applications in the fields of biomedical imaging, national defense, gas analysis and quantum information. Current state-of-the-art direct infrared detectors are thermal sensors, semiconductor detectors or superconducting nanowire detectors. Thermal sensors are cheap, but due to their slow response and low sensitivity, they can only be used in occasions that do not require high precision and speed; semiconductor detectors have high sensitivity, but require cooling and precision processing; superconducting nanowire detectors have high Characterized by sensitivity and...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35G02F1/355G02B27/14
CPCG02F1/353G02F1/3551G02B27/141
Inventor 汪韬马晓燠杨奇龙樊志华贾天豪游双慧
Owner 重庆连芯智能科技研究院有限公司