WO2014048365A1 - Compact dual-channel atomic light filter - Google Patents
Compact dual-channel atomic light filter Download PDFInfo
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- WO2014048365A1 WO2014048365A1 PCT/CN2013/084438 CN2013084438W WO2014048365A1 WO 2014048365 A1 WO2014048365 A1 WO 2014048365A1 CN 2013084438 W CN2013084438 W CN 2013084438W WO 2014048365 A1 WO2014048365 A1 WO 2014048365A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/202—Filters comprising a gas or vapour
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
Definitions
- the present invention relates to optical filters, and more particularly to ultra-stable, ultra-narrow bandwidth organic atom filters based on anomalous dispersion method.
- Atomic filter also known as magneto-optic filter
- Atomic filter as an optical filter device, with ultra-narrow bandwidth of pm, ultra-high long-term stability, imageability, etc., widely used in laser radar all day Time observation, solar hyperspectral resolution observation, free space optical communication, etc.
- the principle of an atomic filter is to place atomic bubbles in the middle of a pair of orthogonal polarizing prisms. Under appropriate temperature and axial magnetic field conditions, only the wavelength and the atoms in the bubble generate partial resonance absorption and occur at an odd angle of 90 degrees. The incident light of the double rotation can pass smoothly, and the light of other wavelengths is suppressed by the orthogonal polarizing prism, thereby achieving the purpose of optical filtering.
- the atomic filter filters by the polarization optical effect when the incident light is non-linearly polarized light such as natural light, the first polarizing prism of the atomic filter loses about half of the energy, which is weak. Extremely unfavorable in signal detection. Therefore, the international use of two sets of atomic filters with the same parameters is used in combination, one way to detect horizontal polarization and the other to detect vertical polarization, to achieve dual-channel simultaneous detection of natural light (Daylight rejection with a new receiver for potassium resonance temperature lidars) , Optics letters, 2002, 27(21): 1932 ⁇ 1934).
- the combination of two identical parametric atomic filters has the problem that the parameters of the sub-filters are not completely the same, and the combination kit has a large volume and weight, and the power consumption is also High, long light path, difficult to adjust and maintain the system.
- the object of the present invention is to provide a compact two-channel atomic filter that is independent of each other by using an organic fusion of a two-pass optical aperture magnet, a dual temperature controller, and a polarization splitting/combiner.
- the atomic filter is fused into a compact two-channel atomic filter that enables simultaneous filtering of both horizontal and vertical channels, increasing the transmission of a single-channel atomic filter and reducing system size, weight and power consumption.
- the stability of the atomic filter is greatly improved, and an effective means for its application is provided.
- a first two-channel atomic filter of a compact two-channel atomic filter is placed in a first temperature control furnace, and a second atomic bubble is placed in a second temperature control furnace
- the first atomic bubble is placed side by side with the second atomic bubble, and the first magnet and the second magnet are respectively placed at both ends of the first atomic bubble and the second atomic bubble, and the first magnet and the second magnet are simultaneously placed in the magnetic shielding box
- the light shielding box is a rectangular parallelepiped
- the left and right sides respectively have an entrance opening and a light exiting opening, a transmission direction of the first polarizing beam splitter, a first polarizer, a first atomic bubble, a second polarizer and a second polarization
- the transmission direction of the beam splitter is coaxially placed in sequence, and the light-emitting holes are disposed in the left and right panels, the first magnet, the second magnet, and the first temperature-control furnace of the magnetic shielding box, and the light-passing holes are respectively connected to the
- the polarization direction of the first polarizer is orthogonal to the polarization direction of the second polarizer; the transmission direction of the third polarization beam splitter, the third polarizer, the second atomic bubble, the fourth polarizer, and the fourth polarization
- the transmission direction of the beam splitter is coaxially placed in turn, and the left and right panels, the first magnet, the second magnet, and the second temperature control furnace of the magnetic shielding box are all provided with light-passing holes, and the light-passing holes are the same as the light-emitting ports of the light-shielding box.
- Axis, third polarizer The polarization direction is orthogonal to the polarization direction of the fourth polarizer; the reflection direction of the first polarization beam splitter is aligned with the reflection direction of the third polarization beam splitter, and the reflection direction of the second polarization beam splitter is aligned with the fourth polarization beam splitter
- the direction of reflection of the device; the two-way temperature controller is respectively connected with the first temperature control furnace and the second temperature control furnace.
- a compact two-channel atomic filter that can simultaneously filter both horizontal and vertical channels, effectively improving the transmission efficiency of the atomic filter.
- Double-pass optical aperture magnets and dual thermostats can be used to improve dual channels.
- the beamer can further improve the polarization degree and out-of-band rejection of the system, and provide an effective means for the popularization and application of the atomic filter.
- FIG. 1 is a schematic diagram of a compact two-channel atomic filter.
- FIG 2 is a perspective view of the first magnet 103 and the second magnet 104.
- a compact two-channel atomic filter is composed of a light shielding box 101, a magnetic shielding box 102, a first magnet 103, a second magnet 104, and a two-way temperature controller. 105.
- the first atomic bubble 203 is placed in the first temperature control furnace 204, and the second atomic bubble 303 is placed in the second temperature control furnace 304.
- the first atomic bubble 203 and the second atomic bubble 303 are placed side by side, in the first atomic bubble 203.
- a first magnet 103 and a second magnet 104 are respectively disposed at two ends of the second atomic bubble 303, and the first magnet 103 and the second magnet 104 are simultaneously placed in a rectangular parallelepiped of the magnetic shielding box 102;
- the light shielding box 101 is a rectangular parallelepiped, and the left and right sides respectively have an entrance opening and an exit opening, a transmission direction of the first polarization beam splitter 201, a first polarizer 202, a first atomic bubble 203, a second polarizer 205 and a second
- the transmission directions of the polarization beam splitter 206 are sequentially placed coaxially.
- the left and right panels of the magnetic shield box 102, the first magnet 103, the second magnet 104, and the first temperature control furnace 204 are all provided with light-passing holes, and the light-passing holes are
- the light entrance of the light shielding box 101 is coaxial, and the polarization direction of the first polarizer 202 is orthogonal to the polarization direction of the second polarizer 205;
- the transmission direction of the third polarization beam splitter 301, the transmission directions of the third polarizer 302, the second atomic bubble 303, the fourth polarizer 305, and the fourth polarization beam splitter 306 are sequentially coaxially placed, and the left and right of the magnetic shield box 102
- the panel, the first magnet 103, the second magnet 104, and the second temperature control furnace 304 are all provided with light-passing holes, and the light-passing holes are coaxial with the light-emitting opening of the light-shielding box 101, and the polarization direction of the third polarizer 302 is
- the polarization directions of the four polarizers 305 are orthogonal;
- the direction of reflection of the first polarization beam splitter 201 is aligned with the direction of reflection of the third polarization beam splitter 301, and the direction of reflection of the second polarization beam splitter 206 is aligned with the direction of reflection of the fourth polarization beam splitter 306;
- the two-way temperature controller 105 is connected to the first temperature control furnace 204 and the second temperature control furnace 106, respectively.
- the incident light enters from the light entrance of the light shielding box 101, and is divided into two paths after the first polarization beam splitter 201, one of which is vertically polarized transmitted light, and the other of which is horizontally polarized reflected light; the transmitted light passes through the first polarization
- the device 202 enters the first atomic bubble 203. Under the constant temperature provided by the first temperature control furnace 204 and the axial magnetic field generated by the first magnet 103 and the second magnet 104, the vertically polarized transmitted light will follow the polarization direction.
- the horizontally polarized reflected light is reflected by the third polarizing beam splitter 301 and then passed through the third polarizer 302 into the second atomic bubble 303, at a constant temperature provided by the second temperature control furnace 304, and by the first magnet 103 and the second magnet Under the action of the axial magnetic field generated by 104, the horizontally polarized reflected light will be rotated by an odd multiple of 90 degrees in the polarization direction to become vertically polarized light, and then subjected to the vertically polarized fourth polarizer 305, and then incident on the fourth polarized component.
- the beam 306 is transmitted through the light exit port of the light shielding box 101 through the fourth polarization beam splitter 306;
- the function of the light shielding box 101 is to seal all the devices for shielding ambient light interference.
- the function of the magnetic shielding box 102 is to shield the first magnet 103 and the second magnet 104 to form an axial magnetic field to avoid magnetic field leakage.
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Abstract
A compact dual-channel atomic light filter, consisting of a light shielding box (101), a magnetic shielding box (102), two atomic foam chambers (203, 303), two magnets (103, 104), two temperature controlled furnaces (204, 304), a two-way temperature controller (105), four polarization beam splitters (201, 206, 301, 306), and four polarizers (202, 205, 302, 305). Using the organic integration of a dual-clear-aperture magnet, the two-way temperature controller and the polarization beam splitters, the present invention integrates two sets of independent atomic light filters into a compact dual-channel atomic light filter, improves the stability and consistency of the dual-channel atomic light filter, reduces the size, weight and power consumption of the whole system, and provides an effective means for the long-term stable operation of the atomic light filter.
Description
一种紧凑型双通道原子滤光器 A compact two-channel atomic filter
¾b ^领域 3⁄4b ^ field
[0001] 本发明涉及滤光器， 尤其涉及基于反常色散法拉第旋光效应的、 超稳定的、 超窄带 宽的原子滤光器。 [0001] The present invention relates to optical filters, and more particularly to ultra-stable, ultra-narrow bandwidth organic atom filters based on anomalous dispersion method.
背景技术 Background technique
[0002] 原子滤光器 (又名磁光滤光器)作为一种光学滤光器件， 具有 pm量级超窄带宽、 超高 长期稳定性、 可成像等特点， 广泛应用于激光雷达全天时观测、 太阳高光谱分辨率观测、 自 由空间光通信等领域 (龚顺生等， 原子滤光及鉴频技术在光电探测中的应用， 激光与光电子 学进展， 2010,47： 042301〜7。 S.D.Harrell, C.-Y.She， et.al. Sodium and potassium vapor Faraday filters revisited: theory and applications, J.Opt.Soc.Am.B, 2009, 26(4): 659〜670)。 [0002] Atomic filter (also known as magneto-optic filter) as an optical filter device, with ultra-narrow bandwidth of pm, ultra-high long-term stability, imageability, etc., widely used in laser radar all day Time observation, solar hyperspectral resolution observation, free space optical communication, etc. (Gong Shunsheng et al., Application of atomic filtering and frequency discrimination technology in photodetection, Progress in Laser and Optoelectronics, 2010, 47: 042301~7. SDHarrell , C.-Y.She, et.al. Sodium and potassium vapor Faraday filters revisited: theory and applications, J. Opt. Soc. Am. B, 2009, 26(4): 659~670).
[0003] 原子滤光器的原理是将原子泡放置在一对正交的偏振棱镜中间， 在适当的温度和轴 向磁场条件下， 只有波长与泡中原子产生部分共振吸收且发生 90度奇数倍旋转的入射光才 能能顺利通过， 而其它波长的光被正交的偏振棱镜抑制， 从而达到光学滤光的目的。 [0003] The principle of an atomic filter is to place atomic bubbles in the middle of a pair of orthogonal polarizing prisms. Under appropriate temperature and axial magnetic field conditions, only the wavelength and the atoms in the bubble generate partial resonance absorption and occur at an odd angle of 90 degrees. The incident light of the double rotation can pass smoothly, and the light of other wavelengths is suppressed by the orthogonal polarizing prism, thereby achieving the purpose of optical filtering.
[0004] 由于原子滤光器利用偏振旋光效应来滤光， 对于入射光为自然光等非线偏振光的情 况下， 原子滤光器的第一个偏振棱镜会损失约一半的能量， 这在微弱信号检测中极其不利。 因此， 国际上利用两套参数完全相同的原子滤光器组合起来使用， 一路检测水平偏振， 另一 路检测垂直偏振， 达到双路同时检测自然光的目的 (Daylight rejection with a new receiver for potassium resonance temperature lidars, Optics letters, 2002, 27(21): 1932〜1934 )。 然而， 在实际 使用中， 这种两个相同参数原子滤光器组合的方式， 存在子滤光器的参数不完全相同的问 题， 并且， 这个组合套件的体积和重量都较大， 功耗也偏高， 光路较长， 系统的调整和维护 困难。 [0004] Since the atomic filter filters by the polarization optical effect, when the incident light is non-linearly polarized light such as natural light, the first polarizing prism of the atomic filter loses about half of the energy, which is weak. Extremely unfavorable in signal detection. Therefore, the international use of two sets of atomic filters with the same parameters is used in combination, one way to detect horizontal polarization and the other to detect vertical polarization, to achieve dual-channel simultaneous detection of natural light (Daylight rejection with a new receiver for potassium resonance temperature lidars) , Optics letters, 2002, 27(21): 1932~1934). However, in actual use, the combination of two identical parametric atomic filters has the problem that the parameters of the sub-filters are not completely the same, and the combination kit has a large volume and weight, and the power consumption is also High, long light path, difficult to adjust and maintain the system.
发明内容 Summary of the invention
[0005] 本发明的目的是： 提供一种紧凑型双通道原子滤光器， 通过采用双通光孔径磁体、 双路控温器和偏振分束 /合束器的有机融合， 将两套独立的原子滤光器融合成紧凑型双通道 原子滤光器， 可以实现水平和垂直两通道的同时滤光， 提高了单通道原子滤光器的透射率， 降低了系统体积、 重量和功耗， 同时大大提高了原子滤光器的稳定性， 为其推广应用提供一 种有效手段。 [0005] The object of the present invention is to provide a compact two-channel atomic filter that is independent of each other by using an organic fusion of a two-pass optical aperture magnet, a dual temperature controller, and a polarization splitting/combiner. The atomic filter is fused into a compact two-channel atomic filter that enables simultaneous filtering of both horizontal and vertical channels, increasing the transmission of a single-channel atomic filter and reducing system size, weight and power consumption. At the same time, the stability of the atomic filter is greatly improved, and an effective means for its application is provided.
[0006] 为了实现上述目的， 本发明采用如下技术方案： [0006] In order to achieve the above object, the present invention adopts the following technical solutions:
一种紧凑型双通道原子滤光器的第一原子泡放在第一控温炉中， 第二原子泡放在第二控温炉
中， 第一原子泡与第二原子泡并排放置， 在第一原子泡和第二原子泡的两端分别放置第一磁 体和第二磁体， 第一磁体和第二磁体同时置于磁屏蔽盒的长方体中； 光屏蔽盒为长方体， 左 右两面分别开有进光口和出光口， 第一偏振分束器的透射方向、 第一偏振器、 第一原子泡、 第二偏振器和第二偏振分束器的透射方向依次同轴放置， 在磁屏蔽盒的左右面板、 第一磁 体、 第二磁体和第一控温炉均设置通光孔， 这些通光孔均与光屏蔽盒的进光口同轴， 第一偏 振器的偏振方向与第二偏振器的偏振方向正交； 第三偏振分束器的透射方向、 第三偏振器、 第二原子泡、 第四偏振器和第四偏振分束器的透射方向依次同轴放置， 磁屏蔽盒的左右面 板、 第一磁体、 第二磁体和第二控温炉均设置通光孔， 这些通光孔均与光屏蔽盒的出光口同 轴， 第三偏振器的偏振方向与第四偏振器的偏振方向正交； 第一偏振分束器的反射方向对准 第三偏振分束器的反射方向， 第二偏振分束器的反射方向对准第四偏振分束器的反射方向； 双路控温器分别与第一控温炉和第二控温炉连接。 A first two-channel atomic filter of a compact two-channel atomic filter is placed in a first temperature control furnace, and a second atomic bubble is placed in a second temperature control furnace The first atomic bubble is placed side by side with the second atomic bubble, and the first magnet and the second magnet are respectively placed at both ends of the first atomic bubble and the second atomic bubble, and the first magnet and the second magnet are simultaneously placed in the magnetic shielding box In the rectangular parallelepiped; the light shielding box is a rectangular parallelepiped, and the left and right sides respectively have an entrance opening and a light exiting opening, a transmission direction of the first polarizing beam splitter, a first polarizer, a first atomic bubble, a second polarizer and a second polarization The transmission direction of the beam splitter is coaxially placed in sequence, and the light-emitting holes are disposed in the left and right panels, the first magnet, the second magnet, and the first temperature-control furnace of the magnetic shielding box, and the light-passing holes are respectively connected to the light shielding box. Coaxially coaxial, the polarization direction of the first polarizer is orthogonal to the polarization direction of the second polarizer; the transmission direction of the third polarization beam splitter, the third polarizer, the second atomic bubble, the fourth polarizer, and the fourth polarization The transmission direction of the beam splitter is coaxially placed in turn, and the left and right panels, the first magnet, the second magnet, and the second temperature control furnace of the magnetic shielding box are all provided with light-passing holes, and the light-passing holes are the same as the light-emitting ports of the light-shielding box. Axis, third polarizer The polarization direction is orthogonal to the polarization direction of the fourth polarizer; the reflection direction of the first polarization beam splitter is aligned with the reflection direction of the third polarization beam splitter, and the reflection direction of the second polarization beam splitter is aligned with the fourth polarization beam splitter The direction of reflection of the device; the two-way temperature controller is respectively connected with the first temperature control furnace and the second temperature control furnace.
[0007] 本发明的优点和效果： Advantages and effects of the present invention:
一种紧凑型双通道原子滤光器， 可以实现水平和垂直两通道的同时滤光， 有效提高了原子滤 光器的透射效率， 采用双通光孔径磁体和双路恒温器， 可提高双通道原子滤光器的磁场强度 和双路温度控制的一致性及控制精度， 同时也降低了整个系统的体积、 重量以及功耗； 对水 平和垂直两路偏振光的分离和合束均采用了偏振分束器， 可进一步提高系统的偏振度和带外 抑制能力， 为原子滤光器的推广应用提供一种有效手段。 A compact two-channel atomic filter that can simultaneously filter both horizontal and vertical channels, effectively improving the transmission efficiency of the atomic filter. Double-pass optical aperture magnets and dual thermostats can be used to improve dual channels. The magnetic field strength of the atomic filter and the consistency and control accuracy of the two-way temperature control, while also reducing the volume, weight and power consumption of the entire system; the separation and combining of the horizontal and vertical polarized light are polarized The beamer can further improve the polarization degree and out-of-band rejection of the system, and provide an effective means for the popularization and application of the atomic filter.
附图说明 DRAWINGS
[0008] 图 1为一种紧凑型双通道原子滤光器的示意图。 1 is a schematic diagram of a compact two-channel atomic filter.
[0009] 其中： 101光屏蔽盒、 102磁屏蔽盒、 103第一磁体、 104第二磁体、 105双路控温 器、 201第一偏振分束器、 202第一偏振器、 203第一原子泡、 204第一控温炉、 205第二偏 振器、 206第二偏振分束器、 301第三偏振分束器、 302第三偏振器、 303第二原子泡、 304 第二控温炉、 305第四偏振器、 306第四偏振分束器。 [0009] wherein: 101 light shielding box, 102 magnetic shielding box, 103 first magnet, 104 second magnet, 105 dual temperature controller, 201 first polarizing beam splitter, 202 first polarizer, 203 first atom Bubble, 204 first temperature control furnace, 205 second polarizer, 206 second polarization beam splitter, 301 third polarization beam splitter, 302 third polarizer, 303 second atomic bubble, 304 second temperature control furnace, 305 fourth polarizer, 306 fourth polarizing beam splitter.
[0010] 图 2为第一磁体 103和第二磁体 104的立体示意图。 2 is a perspective view of the first magnet 103 and the second magnet 104.
具体实施方式 detailed description
[0011] 实施例： 由图 1和图 2可知， 一种紧凑型双通道原子滤光器由光屏蔽盒 101、 磁屏蔽 盒 102、 第一磁体 103、 第二磁体 104、 双路控温器 105、 第一偏振分束器 201、 第一偏振器 202、 第一原子泡 203、 第一控温炉 204、 第二偏振器 205、 第二偏振分束器 206、 第三偏振 分束器 301、 第三偏振器 302、 第二原子泡 303、 第二控温炉 304、 第四偏振器 305和第四偏 振分束器 306组成；
第一原子泡 203放在第一控温炉 204中， 第二原子泡 303放在第二控温炉 304中， 第一原子 泡 203与第二原子泡 303并排放置， 在第一原子泡 203和第二原子泡 303的两端分别放置第 一磁体 103和第二磁体 104， 第一磁体 103和第二磁体 104同时置于磁屏蔽盒 102的长方体 中； [0011] Embodiment: As can be seen from FIG. 1 and FIG. 2, a compact two-channel atomic filter is composed of a light shielding box 101, a magnetic shielding box 102, a first magnet 103, a second magnet 104, and a two-way temperature controller. 105. The first polarization beam splitter 201, the first polarizer 202, the first atomic bubble 203, the first temperature control furnace 204, the second polarizer 205, the second polarization beam splitter 206, and the third polarization beam splitter 301 a third polarizer 302, a second atomic bubble 303, a second temperature control furnace 304, a fourth polarizer 305, and a fourth polarization beam splitter 306; The first atomic bubble 203 is placed in the first temperature control furnace 204, and the second atomic bubble 303 is placed in the second temperature control furnace 304. The first atomic bubble 203 and the second atomic bubble 303 are placed side by side, in the first atomic bubble 203. And a first magnet 103 and a second magnet 104 are respectively disposed at two ends of the second atomic bubble 303, and the first magnet 103 and the second magnet 104 are simultaneously placed in a rectangular parallelepiped of the magnetic shielding box 102;
光屏蔽盒 101为长方体， 左右两面分别开有进光口和出光口， 第一偏振分束器 201的透射方 向、 第一偏振器 202、 第一原子泡 203、 第二偏振器 205和第二偏振分束器 206的透射方向 依次同轴放置， 在磁屏蔽盒 102的左右面板、 第一磁体 103、 第二磁体 104和第一控温炉 204均设置通光孔， 这些通光孔均与光屏蔽盒 101的进光口同轴， 第一偏振器 202的偏振方 向与第二偏振器 205的偏振方向正交； The light shielding box 101 is a rectangular parallelepiped, and the left and right sides respectively have an entrance opening and an exit opening, a transmission direction of the first polarization beam splitter 201, a first polarizer 202, a first atomic bubble 203, a second polarizer 205 and a second The transmission directions of the polarization beam splitter 206 are sequentially placed coaxially. The left and right panels of the magnetic shield box 102, the first magnet 103, the second magnet 104, and the first temperature control furnace 204 are all provided with light-passing holes, and the light-passing holes are The light entrance of the light shielding box 101 is coaxial, and the polarization direction of the first polarizer 202 is orthogonal to the polarization direction of the second polarizer 205;
第三偏振分束器 301的透射方向、 第三偏振器 302、 第二原子泡 303、 第四偏振器 305和第 四偏振分束器 306的透射方向依次同轴放置， 磁屏蔽盒 102的左右面板、 第一磁体 103、 第 二磁体 104和第二控温炉 304均设置通光孔， 这些通光孔均与光屏蔽盒 101的出光口同轴， 第三偏振器 302的偏振方向与第四偏振器 305的偏振方向正交； The transmission direction of the third polarization beam splitter 301, the transmission directions of the third polarizer 302, the second atomic bubble 303, the fourth polarizer 305, and the fourth polarization beam splitter 306 are sequentially coaxially placed, and the left and right of the magnetic shield box 102 The panel, the first magnet 103, the second magnet 104, and the second temperature control furnace 304 are all provided with light-passing holes, and the light-passing holes are coaxial with the light-emitting opening of the light-shielding box 101, and the polarization direction of the third polarizer 302 is The polarization directions of the four polarizers 305 are orthogonal;
第一偏振分束器 201的反射方向对准第三偏振分束器 301的反射方向， 第二偏振分束器 206 的反射方向对准第四偏振分束器 306的反射方向； The direction of reflection of the first polarization beam splitter 201 is aligned with the direction of reflection of the third polarization beam splitter 301, and the direction of reflection of the second polarization beam splitter 206 is aligned with the direction of reflection of the fourth polarization beam splitter 306;
双路控温器 105分别与第一控温炉 204和第二控温炉 106连接。 The two-way temperature controller 105 is connected to the first temperature control furnace 204 and the second temperature control furnace 106, respectively.
[0012] 本发明的工作过程为： [0012] The working process of the present invention is:
入射光从光屏蔽盒 101的进光口进入， 经第一偏振分束器 201后分成两路， 一路为竖直偏振 的透射光， 另一路为水平偏振的反射光； 透射光经第一偏振器 202进入第一原子泡 203， 在 第一控温炉 204提供的恒定温度及由第一磁体 103和第二磁体 104共同产生的轴向磁场作用 下， 竖直偏振的透射光会沿偏振方向旋转 90度的奇数倍成为水平偏振光， 再经水平偏振的 第二偏振器 205后， 经第二偏振分束器 206的反射， 经第四偏振分束器 306反射从光屏蔽盒 101的出光口射出； The incident light enters from the light entrance of the light shielding box 101, and is divided into two paths after the first polarization beam splitter 201, one of which is vertically polarized transmitted light, and the other of which is horizontally polarized reflected light; the transmitted light passes through the first polarization The device 202 enters the first atomic bubble 203. Under the constant temperature provided by the first temperature control furnace 204 and the axial magnetic field generated by the first magnet 103 and the second magnet 104, the vertically polarized transmitted light will follow the polarization direction. Rotating an odd multiple of 90 degrees into horizontally polarized light, and then passing through the horizontally polarized second polarizer 205, and reflecting by the second polarizing beam splitter 206, reflects the light from the light shielding box 101 through the fourth polarizing beam splitter 306. Shot out;
水平偏振的反射光经第三偏振分束器 301反射， 再经第三偏振器 302进入第二原子泡 303， 在第二控温炉 304提供的恒定温度及由第一磁体 103和第二磁体 104共同产生的轴向磁场作 用下， 水平偏振的反射光会沿偏振方向旋转 90度的奇数倍成为竖直偏振光， 再经竖直偏振 的第四偏振器 305后， 入射到第四偏振分束器 306， 经第四偏振分束器 306透射从光屏蔽盒 101的出光口射出； The horizontally polarized reflected light is reflected by the third polarizing beam splitter 301 and then passed through the third polarizer 302 into the second atomic bubble 303, at a constant temperature provided by the second temperature control furnace 304, and by the first magnet 103 and the second magnet Under the action of the axial magnetic field generated by 104, the horizontally polarized reflected light will be rotated by an odd multiple of 90 degrees in the polarization direction to become vertically polarized light, and then subjected to the vertically polarized fourth polarizer 305, and then incident on the fourth polarized component. The beam 306 is transmitted through the light exit port of the light shielding box 101 through the fourth polarization beam splitter 306;
光屏蔽盒 101的作用是将所有器件密封起来， 用于屏蔽环境光干扰， 磁屏蔽盒 102的作用是 将第一磁体 103和第二磁体 104屏蔽起来， 组成轴向磁场， 避免磁场泄露。
The function of the light shielding box 101 is to seal all the devices for shielding ambient light interference. The function of the magnetic shielding box 102 is to shield the first magnet 103 and the second magnet 104 to form an axial magnetic field to avoid magnetic field leakage.
Claims
1. 一种紧凑型双通道原子滤光器， 其特征在于， 该原子滤光器的第一原子泡 ( 203) 放在第一控温炉 （204) 中， 第二原子泡 （303) 放在第二控温炉 （304) 中， 第一原子泡 （203) 与第二原子泡 （303) 并排放置， 在第一原子泡 （203) 和第二原子泡 （303) 的两端分别放置第一磁体 （103) 和第二磁体 （104) ， 第 一磁体 （103) 和第二磁体 （104) 同时置于磁屏蔽盒 （102) 的长方体中； 光屏 蔽盒（ 101 )为长方体，左右两面分别开有进光口和出光口，第一偏振分束器（ 201 ) 的透射方向、 第一偏振器 （202) 、 第一原子泡 （203) 、 第二偏振器 （205) 和 第二偏振分束器（206) 的透射方向依次同轴放置， 在磁屏蔽盒（102) 的左右面 板、 第一磁体 （103) 、 第二磁体 （104) 和第一控温炉 （204) 均设置通光孔， 这些通光孔均与光屏蔽盒（101 ) 的进光口同轴， 第一偏振器（202) 的偏振方向 与第二偏振器 （205) 的偏振方向正交； 第三偏振分束器 （301 ) 的透射方向、第 三偏振器 （302) 、 第二原子泡 （303) 、 第四偏振器 （305) 和第四偏振分束器A compact two-channel atomic filter, characterized in that a first atomic bubble (203) of the atomic filter is placed in a first temperature control furnace (204), and a second atomic bubble (303) is placed In the second temperature control furnace (304), the first atomic bubble (203) is placed side by side with the second atomic bubble (303), and placed at both ends of the first atomic bubble (203) and the second atomic bubble (303), respectively. The first magnet (103) and the second magnet (104), the first magnet (103) and the second magnet (104) are simultaneously placed in a rectangular parallelepiped of the magnetic shielding box (102); the light shielding box (101) is a rectangular parallelepiped, left and right The two sides are respectively provided with an entrance port and a light exit port, a transmission direction of the first polarization beam splitter (201), a first polarizer (202), a first atomic bubble (203), a second polarizer (205) and a second The transmission directions of the polarization beam splitter (206) are sequentially placed coaxially, and are disposed on the left and right panels of the magnetic shield box (102), the first magnet (103), the second magnet (104), and the first temperature control furnace (204). Through holes, the through holes are coaxial with the light entrance of the light shielding box (101), the first polarizer The polarization direction of 202) is orthogonal to the polarization direction of the second polarizer (205); the transmission direction of the third polarization beam splitter (301), the third polarizer (302), the second atomic bubble (303), and the fourth Polarizer (305) and fourth polarization beam splitter
( 306)的透射方向依次同轴放置，磁屏蔽盒（102)的左右面板、第一磁体（103)、 第二磁体（104)和第二控温炉 （304)均设置通光孔， 这些通光孔均与光屏蔽盒The transmission directions of (306) are sequentially coaxially disposed, and the left and right panels of the magnetic shield case (102), the first magnet (103), the second magnet (104), and the second temperature control furnace (304) are all provided with light-passing holes. Light-passing aperture and light shielding box
( 101 ) 的出光口同轴， 第三偏振器 （302) 的偏振方向与第四偏振器 （305) 的 偏振方向正交； 第一偏振分束器 （201 ) 的反射方向对准第三偏振分束器 （301 ) 的反射方向， 第二偏振分束器 （206) 的反射方向对准第四偏振分束器 （306)的 反射方向； 双路控温器 （105) 分别与第一控温炉 （204) 和第二控温炉 （304) 连接。 The light exit of (101) is coaxial, the polarization direction of the third polarizer (302) is orthogonal to the polarization direction of the fourth polarizer (305); the reflection direction of the first polarization beam splitter (201) is aligned with the third polarization The direction of reflection of the beam splitter (301), the direction of reflection of the second polarization beam splitter (206) is aligned with the direction of reflection of the fourth polarization beam splitter (306); the two-way temperature controller (105) is respectively associated with the first control The furnace (204) is connected to the second temperature control furnace (304).
2. 根据权利要求 1所述的一种紧凑型双通道原子滤光器， 其特征在于， 所述的 第一控温炉 （204) 和第二控温炉 （304) 的恒定温度在 50°C〜220°C。 2. A compact two-channel atomic filter according to claim 1, wherein said first temperature control furnace (204) and said second temperature control furnace (304) have a constant temperature of 50[deg.] C ~ 220 ° C.
3. 根据权利要求 1所述的一种紧凑型双通道原子滤光器， 其特征在于， 所述的 第一磁体 （103)和第二磁体（104)共同产生的轴向磁场强度在 200 Gs 〜3000Gs。
3. A compact two-channel atomic filter according to claim 1, wherein said first magnet (103) and said second magnet (104) together generate an axial magnetic field strength of 200 Gs ~3000Gs.
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| CN103972781B (en) * | 2014-05-22 | 2016-11-23 | 北京大学 | A kind of novel faraday anomalous dispersion atomic light filter structure of Highgrade integration |
| CN106200022B (en) * | 2016-07-27 | 2019-01-11 | 中国科学院武汉物理与数学研究所 | A kind of optical fiber atom filter device |
| CN112326022B (en) * | 2020-11-03 | 2023-06-02 | 中国科学院精密测量科学与技术创新研究院 | Single-bubble bidirectional transmission double-channel Faraday atomic frequency discriminator |
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| US7058110B2 (en) * | 2003-10-09 | 2006-06-06 | Trex Enterprises Corp. | Excited state atomic line filters |
| CN201548326U (en) * | 2009-08-12 | 2010-08-11 | 中国科学院武汉物理与数学研究所 | Double-channel atom filtering full-disk solar imager |
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| CN202948211U (en) * | 2012-09-29 | 2013-05-22 | 中国科学院武汉物理与数学研究所 | Compact type double-channel atomic optical filter |
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