Generation device of high-uniformity single-photon area light source

A generation device and uniformity technology, which is applied in the field of optoelectronic information, can solve the problem of no reliable method for simulating a single-photon surface light source, and achieve the effect of flexible and adjustable repetition frequency, flexible and adjustable frequency, and high uniformity

Inactive Publication Date: 2020-03-27
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

There is no reliable method for the generation and calibration of this type of simulated single-photon surface light source, and innovative research is needed

Method used

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  • Generation device of high-uniformity single-photon area light source

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Embodiment 1

[0039] The purpose of this embodiment is to use the high-uniformity single-photon surface light source generation device disclosed in the present invention to generate a single-photon surface light source with a wavelength of 1550 nm, and accurately calibrate it to 0.1 photons per pulse in a square area of ​​100 μm×100 μm on the target distance. Light intensity, to further illustrate the feasibility of the present invention.

[0040] The structure and attachment of its optical generating device figure 1 consistent, including:

[0041] ①Monochromatic pulse laser, the laser wavelength λ is 1550nm, the repetition frequency F adjustment range is 0Hz-100MHz, and the laser energy per pulse is 1.2pJ.

[0042] ②Optical attenuator, the transmission wavelength is 1550nm, the attenuation coefficient range is adjustable from 0 to -80dB, and the adjustment accuracy is 0.01dB.

[0043]③Collimating lens group, transmission wavelength 1550nm, output beam emission angle 0.02°, beam waist dia...

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Abstract

The invention discloses a generation device of a high-uniformity single-photon surface light source. The generation device is formed by sequentially connecting the following components: a pulse laserwith the wavelength lambda and the repetition frequency F, and an optical attenuator with the attenuation coefficient beta through an optical fiber, the attenuator is connected with the collimating lens group through an optical fiber; the lens group is aligned with the micro lens with the divergence angle theta; the distance between the optical power probe with the area S and the micro lens is D;beta is changed to enable the power P of the optical power meter to be equal to FhcS / (10 lambda), and then beta is fixed; and F is changed to obtain a high-uniformity single-photon surface light source of 0.1 photon per pulse in a unit area within a + / -2theta angle range on an optical axis vertical plane of the distance D under any laser repetition frequency. The generation device has the advantages that the generated single-photon surface light source has a fixed divergence angle, is high in uniformity, can flexibly modulate the photon rate, covers a large area and a long working distance, and is suitable for the fields of quantum information, single-photon laser imaging and the like.

Description

technical field [0001] The invention belongs to the field of optoelectronic information technology, and in particular relates to a high-uniformity single-photon surface light source generating device. Background technique [0002] The single-photon light source specifically refers to a discontinuous monochromatic light source. An ideal single-photon light source would output photon energy exactly equal to the energy of a single photon of a fixed wavelength. If the polarization states of photons output each time are also completely the same, the single-photon light source is a coherent single-photon light source. Since the essence of light is electromagnetic waves, it has wave-particle duality, and the output characteristics of single-photon light sources can fully reflect the particle and wave properties of photons. , single-photon laser imaging and other fields have important applications. [0003] However, ideal single-photon light sources do not exist in nature. Fluor...

Claims

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Application Information

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IPC IPC(8): G02B27/09
CPCG02B27/0927G02B27/0961
Inventor 马英杰顾溢邵秀梅李雪龚海梅
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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