CN202631716U - Transient magnetic field measuring instrument - Google Patents
Transient magnetic field measuring instrument Download PDFInfo
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- CN202631716U CN202631716U CN 201220079441 CN201220079441U CN202631716U CN 202631716 U CN202631716 U CN 202631716U CN 201220079441 CN201220079441 CN 201220079441 CN 201220079441 U CN201220079441 U CN 201220079441U CN 202631716 U CN202631716 U CN 202631716U
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Abstract
Description
技术领域 technical field
本实用新型涉及一种用于激光等离子体磁场诊断的仪器，尤其是一种瞬态磁场测量仪。 The utility model relates to an instrument for laser plasma magnetic field diagnosis, in particular to a transient magnetic field measuring instrument. the
背景技术 Background technique
传统的等离子体磁场测量方法主要是在等离子体存在时间较长的情况下进行测量，这样是因为有足够的时间进行仪器的调整，但对于存在时间很短的高能等离子体，传统的方法不再适用，尤其在研究昂贵等离子体(如强激光等离子体)状态时，瞬态磁场测量仪获得等离子体磁场信息显得尤为重要。 The traditional plasma magnetic field measurement method is mainly to measure when the plasma exists for a long time, because there is enough time for instrument adjustment, but for the high-energy plasma with a short existence time, the traditional method no longer Applicable, especially when studying the state of expensive plasma (such as strong laser plasma), it is particularly important to obtain plasma magnetic field information with a transient magnetic field measuring instrument. the
对激光等离子测量技术而言，通常采用的办法是将探针激光和产生等离子体激光时间同步，然后通过调节探针光与主激光的时间差来研究激光等离子体动力学演化特征。这里的激光等离子体即待测物，它是由主激光与物质相互作用产生的。如果不采用瞬态磁场测量的方法，而是通过构造相同物理条件的等离子体进行多次调整测量，这样不仅会带来实验上的误差，而且成本是非常高的。因此，保证能在一次实验中测量出等离子体磁场是十分重要的。 For laser plasma measurement technology, the usual method is to synchronize the time of the probe laser and the plasma laser, and then study the dynamic evolution characteristics of the laser plasma by adjusting the time difference between the probe light and the main laser. The laser plasma here is the object to be measured, which is generated by the interaction between the main laser and the matter. If the method of measuring the transient magnetic field is not used, but the plasma with the same physical conditions is constructed for multiple adjustment measurements, it will not only bring experimental errors, but also the cost will be very high. Therefore, it is very important to ensure that the plasma magnetic field can be measured in one experiment. the
瞬态磁场测量仪是用来测量存在时间很短的等离子体磁场。它可以从一束探针光中获取等离子体的磁场的信息，这样提高了等离子体磁场测量的精度并且节约了成本。 The transient magnetic field measuring instrument is used to measure the plasma magnetic field that exists for a short time. It can obtain the information of the magnetic field of the plasma from a beam of probe light, which improves the accuracy of the plasma magnetic field measurement and saves the cost. the
实用新型内容 Utility model content
为了克服传统等离子体磁场测量方法误差较大且成本很高的问题，本实用新型提供一种瞬态磁场测量仪。 In order to overcome the problems of large error and high cost in the traditional plasma magnetic field measuring method, the utility model provides a transient magnetic field measuring instrument. the
本实用新型解决其技术问题所采用的技术方案是： The technical scheme that the utility model solves its technical problem adopts is:
一种瞬态磁场测量仪，包括一激光器(11)，和在一底座(10)上并排设置的一待测物磁场测量系统，其特征在于，所述激光器(11)用于产生偏振的探针激光；所述待测物磁场测量系统包括一分束镜(31)、一第一成像透镜(41)、一第一偏振片(61)、一反射镜(71)、一第二成像透镜(42)、和一第二偏振片(62)，上述元件构成磁场测量系统，用于测量所述待测样品(21)的磁场。 A transient magnetic field measuring instrument, comprising a laser (11), and a magnetic field measurement system of an object to be measured arranged side by side on a base (10), it is characterized in that the laser (11) is used to generate a polarized probe needle laser; the magnetic field measurement system of the object to be measured includes a beam splitter (31), a first imaging lens (41), a first polarizer (61), a mirror (71), and a second imaging lens (42), and a second polarizer (62), the above components constitute a magnetic field measurement system for measuring the magnetic field of the sample to be tested (21). the
所述待测样品(21)可以为激光等离子体。 The sample to be tested (21) may be laser plasma. the
所述瞬态磁场测量仪还包括一第一CCD图像传感器(51)，用于接收所述待测物磁场测量系统得到的测量结果。 The transient magnetic field measuring instrument also includes a first CCD image sensor (51), which is used to receive the measurement results obtained by the magnetic field measuring system of the object under test. the
所述瞬态磁场测量仪还包括一第二CCD图像传感器(52)，用于接收所述待测物磁场测量系统得到的测量结果。 The transient magnetic field measuring instrument also includes a second CCD image sensor (52), which is used to receive the measurement result obtained by the magnetic field measuring system of the object under test. the
本实用新型的有益效果是，本瞬态磁场测量仪可以在很短时间内完成对等离子体磁场的测量，这样减小了误差并且降低了成本。 The beneficial effect of the utility model is that the transient magnetic field measuring instrument can complete the measurement of the plasma magnetic field in a short time, thus reducing errors and costs. the
附图说明 Description of drawings
图1为瞬态磁场测量仪光路图； Fig. 1 is the optical circuit diagram of the transient magnetic field measuring instrument;
图2为瞬态磁场测量仪的箱体内部实物全景图； Figure 2 is a panoramic view of the interior of the transient magnetic field measuring instrument;
图3为瞬态磁场测量仪前侧图； Figure 3 is a front view of the transient magnetic field measuring instrument;
图4为瞬态磁场测量仪后侧图。 Figure 4 is a rear view of the transient magnetic field measuring instrument. the
11：激光器； 11: laser;
21：待测样品； 21: sample to be tested;
31：分束镜； 31: beam splitter;
41，42：成像透镜； 41, 42: imaging lens;
51，52：CCD图像传感器； 51, 52: CCD image sensor;
61，62：偏振片； 61, 62: polarizer;
71：全反射镜； 71: total reflection mirror;
10：底座； 10: Base;
101，102：通光孔。 101, 102: light holes. the
具体实施方式 Detailed ways
为了使本瞬态磁场测量仪的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本瞬态磁场测量仪。 In order to make the technical means, creative features, goals and effects of this transient magnetic field measuring instrument easy to understand, the following will further explain this transient magnetic field measuring instrument in combination with specific diagrams. the
图1为瞬态磁场测量仪光路图。图2为瞬态磁场测量仪的箱体内部实物全景图；由于瞬态磁场测量仪箱体内部主要部件即为上述瞬态磁场测量仪，因此，图2也是上述瞬态磁场测量仪的实物全景图。 Figure 1 is the optical circuit diagram of the transient magnetic field measuring instrument. Fig. 2 is a panorama of the physical object inside the cabinet of the transient magnetic field measuring instrument; since the main part inside the cabinet of the transient magnetic field measuring instrument is the above-mentioned transient magnetic field measuring instrument, Fig. 2 is also a panorama of the physical object of the above-mentioned transient magnetic field measuring instrument picture. the
结合图1和图2可以看出，该瞬态磁场测量仪设置在底座(10)上。激光器(11)产生的偏振的探针激光经过待测样品(21)被分束镜(31)分为A、B两束激光光束。其中A束激光经过第一成像透镜(41)和第一偏振片(61)后，在第一CCD图像传感器(51)上给出待测样品磁场测量结果。B束激光经过反射镜(71)，再经过第二成像透镜(42)和第二偏振片(62)后，在第二CCD图像传感器(52)上给出待测物磁场测量结果。两个偏振片(61)和(62)都要预先设定一个初始角度，且两个角度不相同，这样通过两个CCD图像传感器(51)和(52)测量的结果，就可以计算出探针光经过待测样品后的偏转角度，从而根据法拉第旋转的方法可以得到待测样品的磁场。 It can be seen from Fig. 1 and Fig. 2 that the transient magnetic field measuring instrument is arranged on the base (10). The polarized probe laser light generated by the laser (11) passes through the sample to be tested (21) and is divided into two laser beams, A and B, by a beam splitter (31). Wherein, after the laser beam A passes through the first imaging lens (41) and the first polarizer (61), the measurement result of the magnetic field of the sample to be tested is given on the first CCD image sensor (51). After the B beam of laser light passes through the mirror (71), and then through the second imaging lens (42) and the second polarizer (62), the measurement result of the magnetic field of the object under test is given on the second CCD image sensor (52). The two polarizers (61) and (62) all have to preset an initial angle, and the two angles are not the same, so through the results measured by the two CCD image sensors (51) and (52), the detection angle can be calculated. The deflection angle of the needle light after passing through the sample to be measured, so that the magnetic field of the sample to be measured can be obtained according to the Faraday rotation method. the
图2为瞬态磁场测量仪的箱体内部实物图。在进行磁场测量时，需要将瞬态磁场测量仪固定在光学平台即底座(10)上，并保证其水平。 Figure 2 is a physical diagram of the interior of the transient magnetic field measuring instrument. When measuring the magnetic field, it is necessary to fix the transient magnetic field measuring instrument on the optical platform, that is, the base (10), and ensure its level. the
图3为瞬态磁场测量仪的前侧图。前侧只有一个通光孔，用来通过激光器11所产生的偏振的探针激光。使用时，需要调节瞬态磁场测量仪的位置，使探针激光穿过待测样品(21)后再从通光孔正入射。 Fig. 3 is a front view of the transient magnetic field measuring instrument. The front side has only one aperture for passing the polarized probe laser light generated by the laser 11 . When in use, the position of the transient magnetic field measuring instrument needs to be adjusted so that the probe laser passes through the sample (21) to be measured and then is incident from the light hole. the
图4为瞬态磁场测量仪的后侧图，后侧有两个通光孔(101)和(102)，在进行等离子体磁场测量时，两个通光孔(101)和(102)分别接两个CCD图像传感器(51)和(52)进行数据采集。 Fig. 4 is the rear side view of the transient magnetic field measuring instrument, there are two light holes (101) and (102) on the back side, when carrying out plasma magnetic field measurement, two light holes (101) and (102) respectively Two CCD image sensors (51) and (52) are connected for data acquisition. the
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| CN 201220079441 CN202631716U (en) | 2012-03-06 | 2012-03-06 | Transient magnetic field measuring instrument |
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| CN 201220079441 CN202631716U (en) | 2012-03-06 | 2012-03-06 | Transient magnetic field measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187500A (en) * | 2018-09-28 | 2019-01-11 | 北京师范大学 | Multichannel active laser diagnostic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109187500A (en) * | 2018-09-28 | 2019-01-11 | 北京师范大学 | Multichannel active laser diagnostic equipment |
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Granted publication date: 20121226 Termination date: 20140306 |