Device, method and system for measuring second-order coherence degree of light

A measurement device and technology of coherence, applied in the field of optical measurement, can solve the problem of single measurement effect, and achieve the effect of easy movement and rich effects

Pending Publication Date: 2022-05-17
青岛鲲腾量子应用技术有限公司
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Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a second-order coherence measurement...

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  • Device, method and system for measuring second-order coherence degree of light
  • Device, method and system for measuring second-order coherence degree of light
  • Device, method and system for measuring second-order coherence degree of light

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] It can be understood that the terms "first", "second" and the like used in the present application may be used to describe various elements herein, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first xx script could be termed a second xx script, and, similarly, a second xx script could be termed a first xx script, without departing from the scope of the present application.

[0034] First, let’s introduce the coincidence measurement method. The coincidence method is a ...

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Abstract

The invention is suitable for the technical field of optical measurement, and provides a device, a method and a system for measuring the second-order coherence degree of light. The invention discloses a light second-order coherence degree measuring device, and the device comprises a laser output module which is used for outputting a plurality of laser beams; the thermo-optical modulation module is used for receiving the laser beam of the laser output module and converting the laser beam into thermo-optical; the single-photon modulation module is used for receiving the laser beam of the laser output module and converting the wavelength of the laser beam to obtain a single-photon beam; and the photon detection module is used for receiving the thermal light and the single-photon light beam and is used for coincidence measurement counting of the second-order coherence degree of the thermal light and the second-order coherence degree of the single-photon light beam. The thermo-optical modulation module and the single-photon modulation module are arranged in the same optical path, so that the second-order coherence degree of different optical fields can be measured at the same time, and the experiment effect is richer.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a second-order coherence measurement device, method and system of light. Background technique [0002] Exploring the high-order coherence and quantum statistical properties of light fields has become one of the important contents of quantum optics research. A deep understanding of it can be traced back to Hanbury, Brown and Twiss (HBT) intensity correlation measurements at different space-time points in the 1950s and the theory of light field coherence proposed by Roy J. Glauber in 1963 . Shortly thereafter, using photomultiplication technology, Arecchi et al. completed the measurement of photon statistical distribution in coherent light and thermal optical fields, and obtained the coherence characteristics of the above-mentioned light fields near the threshold. At the same time, Morgan and Mandel used a single detector to measure the bunching effect of ...

Claims

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Application Information

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IPC IPC(8): G01J9/00
CPCG01J9/00
Inventor 李健亮
Owner 青岛鲲腾量子应用技术有限公司
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