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Automatic positioning and calibrating device for infrared modulation photoluminescence (PL) bi-dimensional imaging light path

A two-dimensional imaging and automatic positioning technology, applied in the direction of material excitation analysis, to achieve the effect of solving high-precision adjustment and correction, high degree of automation, and clear principle

Active Publication Date: 2014-12-03
上海济物光电技术有限公司
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Problems solved by technology

However, the spatially resolved and imaging PL spectra of the corresponding bands are still technically forbidden

Method used

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  • Automatic positioning and calibrating device for infrared modulation photoluminescence (PL) bi-dimensional imaging light path

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Embodiment Construction

[0038] According to the technical solution of the content of the invention, an example of an infrared modulation photoluminescence two-dimensional imaging optical path automatic positioning and calibration device is constructed, as follows:

[0039] Long-term stable laser light source:

[0040] A 514.5nm argon ion laser is selected, and the LPC of Brockton Electro Optics corp is used to control the laser power and stabilize the direction;

[0041] Equidistant long focal length light focusing module:

[0042] The telephoto converging lens group uses the combination of calcium fluoride biconvex lens and plano-concave lens provided by Soleibo. The diameter of the lens group is 1 / 2 inch, and the equivalent focal length is 25mm;

[0043] Vertical optical axis calibration system:

[0044] The Fresnel double prism virtual light source spacing is selected to be 1.6mm, and the polarization adjustment bracket produced by the modified Zhuoli Hanguang is used to support the slit and the...

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Abstract

The invention discloses an automatic positioning and calibrating device for an infrared modulation photoluminescence (PL) bi-dimensional imaging light path. The device comprises a long-time stable working laser source, an isometric long-focus light focusing module, a perpendicular light axis calibrating system, a focal plane calibrating system and a feedback self-calibrating control unit. The positions of relevant light instruments are mainly calibrated according to a position drift rate of an interference pattern formed by a Fresnel bi-prism on a high-precision complementary metal oxide semiconductor photoelectric element array, and a charge coupling element laser test array is used for measuring the size of light spots with micron precision. The device has the characteristics of high stability, high sensitivity, high automation degree and the like, and is effective technical guarantee for researching narrow bandage semiconductors comprising large-area infrared detector area array materials.

Description

Technical field: [0001] The invention relates to an infrared modulation photoluminescence two-dimensional imaging optical path automatic positioning and calibration device. The device includes a long-term stable calibration (pump) light source, an equidistant long focal length light focusing module, a vertical optical axis calibration system, a focal plane calibration system, and a feedback self-calibration control unit. Realize the rapid, accurate, and stable automatic positioning and calibration optical path system that is urgently needed for two-dimensional spatially resolved scanning imaging of photoluminescence in the infrared band, and can further combine modulation technology to test the photoluminescence characteristics of infrared band material devices. The in-plane parameters of materials (such as composition distribution, impurity and defect characteristics, radiative recombination and non-radiative recombination ratio) are characterized and studied. Background te...

Claims

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Application Information

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IPC IPC(8): G01N21/63
Inventor 邵军祁镇
Owner 上海济物光电技术有限公司
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