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Broadband photoelectric detector testing device

A technology of photoelectric detectors and testing devices, applied in the field of optoelectronics, to achieve the effects of high measurement accuracy, guaranteed safety, and many optional parameters

Inactive Publication Date: 2021-10-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, no mature and systematic broadband detectors have been used to measure the performance parameters of photodetectors

Method used

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  • Broadband photoelectric detector testing device
  • Broadband photoelectric detector testing device
  • Broadband photoelectric detector testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] see figure 1 , as an example, includes:

[0014] Optical table, used to place optical shielding box, probe station, light source and various optical equipment.

[0015] Optical shielding box, a variable temperature platform is placed inside the optical shielding box, and the function of the optical shielding box is to shield environmental noise.

[0016] A temperature-variable platform, a photodetector is placed inside the variable-temperature platform, which is used to adjust the ambient temperature of the photodetector when it is working.

[0017] Vacuum gauge, used to observe the internal pressure of the variable temperature platform.

[0018] The temperature sensor is used to observe the specific temperature inside the variable temperature platform.

[0019] The self-pressurized liquid nitrogen tank is used to cool down the temperature inside the variable temperature table and adjust the ambient temperature when the photodetector is working.

[0020] Vacuum mech...

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PUM

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Abstract

The invention relates to a broadband photoelectric detector testing device and relates to the photoelectric technology. The device comprises a light source, a chopper, a source meter, a shielding black box, a pre-amplifier and a lock-in amplifier, and is characterized by further comprising a temperature adjusting module, a heat transmission unit of the temperature adjusting module is arranged in the shielding black box, and a temperature sensor is arranged in the shielding black box. According to the device of the invention, tests of different temperatures, different illumination intensities and different bias voltages can be realized.

Description

technical field [0001] The present invention relates to optoelectronic technology. Background technique [0002] The photodetector is based on the photoelectric effect. The irradiated material inside the detector is subjected to light radiation, and the optical signal is converted into an electrical signal. The weak electrical signal generated by the photodetector is processed through the amplification, sampling and conversion of the back-end circuit. , and then applied to actual needs. Photodetectors have high detection sensitivity and fast dynamic time response. These two characteristics can capture extremely weak light signals in real time, so they are widely used in atmospheric monitoring, night vision, communication, flame detection and many other directions. The performance parameters of photodetectors are an important basis for evaluating the performance of photodetectors. The performance parameters include photocurrent, dark current, responsivity, detectivity, time ...

Claims

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Application Information

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IPC IPC(8): G01J1/08G01J1/16
CPCG01J1/08G01J1/16G01J2001/083
Inventor 刘兴钊李雨麒任羿烜刘倢瑃
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA