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High-speed laser power meter

A technology of laser power and measuring instrument, which is applied in the direction of photometry using electrical radiation detectors, and can solve the problem of jitter that cannot be characterized in real time.

Inactive Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this measurement method cannot characterize problems such as energy jitter between different pulses of pulsed lasers in real time

Method used

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  • High-speed laser power meter
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Embodiment Construction

[0023] Hereinafter, some specific embodiments will be used to illustrate the attributes and advantages embodied in the present invention. The present invention is a high-speed laser power measuring instrument designed as follows, such as figure 1 The first embodiment shown. Specifically to this embodiment, the high-speed laser power measuring instrument includes attenuation sheet 1 (the attenuation coefficient is 0.01% at 532 nm), photodetector 2 (Si-based area array detector, corresponding time 15 nanoseconds, area 100 square Mm), high-speed filter amplifier circuit 3 (bandwidth 300MHz), high-speed data acquisition unit 4 (bandwidth 500MHz) and data analysis unit 5 (integrated attenuation factor wavelength dependent attenuation factor, Si-based area array detector detection efficiency and high-speed filtering The magnification of the amplifier circuit). The high-speed laser power measuring instrument is used to measure the real-time power of a semiconductor laser with a repet...

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Abstract

The invention relates to a high-speed laser power meter, which comprises an attenuation plate, a photoelectric detector, a high-speed amplifying and filtering circuit, a high-speed data acquisition unit and a data analysis unit. A quick response detector and a subsequent high-speed signal processing and data acquisition mode are adopted, specified data calibration software is combined, and high-frequency and short-pulse laser power energy information can be acquired accurately.

Description

Technical field [0001] The invention relates to laser power detection technology, which can realize real-time detection of high repetition frequency and short pulse laser power, and specifically relates to a high-speed laser power measuring instrument. Background technique [0002] Today, the application of laser technology has penetrated into all aspects of our lives. For example, laser processing technology developed from the background of high-power lasers has played an extremely important role in industrial manufacturing. At the same time, the application of pulsed laser-based laser technology in the field of scientific research involves a very wide range of fields, such as the spectral characterization of luminescent materials in the field of materials, and the combination of laser ionization mass spectrometry in the field of analysis and modern analytical methods. It is to make the characteristics of the laser shine. Such an important and extensive application makes it ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/42
CPCG01J1/42
Inventor 刘本康
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI