CN103822911A - Raman spectrum enhancing device based on optical waveguide oscillating field sensor - Google Patents

Raman spectrum enhancing device based on optical waveguide oscillating field sensor Download PDF

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CN103822911A
CN103822911A CN 201310667399 CN201310667399A CN103822911A CN 103822911 A CN103822911 A CN 103822911A CN 201310667399 CN201310667399 CN 201310667399 CN 201310667399 A CN201310667399 A CN 201310667399A CN 103822911 A CN103822911 A CN 103822911A
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glass
layer
optical waveguide
raman spectrum
film
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CN 201310667399
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Chinese (zh)
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吴至境
施宇
欧阳爱国
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华东交通大学
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Abstract

The invention relates to a Raman spectrum enhancing device based on an optical waveguide oscillating field sensor. A lower glass layer, a middle glass layer and a coupling prism are tightly attached and connected in sequence from the bottom to top; the bottom surface of the coupling prism is connected with a coupling prism bottom surface metal film; the lower glass layer is connected with a lower glass metal film. According to the Raman spectrum enhancing device, a sample is injected in a middle glass layer sample room as a guided wave layer of the optical waveguide oscillating field sensor, and incident light propagates in a Z-shaped path in the sample, so that the operating distance of the light and a substance to be detected is increased, the luminous power density is extremely high, and the Raman scattering light intensity of the sample can be greatly strengthened. A cylindrical groove of the middle glass layer realizes dynamic online Raman spectrum detection of the substance to be detected.

Description

基于光波导振荡场传感器的拉曼光谱增强装置 Raman spectra in the optical waveguide sensor of the oscillating field enhancement means

技术领域 FIELD

[0001] 本发明涉及的是一种拉曼光谱技术领域的装置,具体是一种基于光波导振荡场传感器的拉曼光谱增强装置。 [0001] The present invention relates to an apparatus for Raman spectroscopy field, in particular based on optical Raman spectrum enhancement oscillating field sensor means.

背景技术 Background technique

[0002] 拉曼光谱属于分子振动光谱,可以用来鉴别物质,定性和定量分析物质,用途十分广泛。 [0002] Raman spectrum of molecular vibrational spectra, can be used to identify the material, qualitative and quantitative analysis of materials, a wide range of uses. 拉曼光谱技术具有高效、简单和绿色的特点,对环境不会造成污染,且分析时间短,费用不高,可实现对微量物质的快速、无损检测。 Raman spectroscopy is an efficient, simple and green features, will not cause environmental pollution, and the analysis time is short, the cost is not high, trace substances can be realized fast, non-destructive testing. 但微量物质的拉曼光谱信号非常微弱,一般仅为入射光强的1#〜,因此需要对拉曼光谱信号进行增强。 Raman spectrum signal trace species but very weak, typically only the incident light intensity ~ # 1, it is necessary to enhance the Raman spectroscopy signals. 近年来,增强拉曼光谱技术作为一种能非常有效探测微量物质分子间相互作用、表征表面分子吸附行为和分子结构的工具,受到了国内外广泛地关注。 In recent years, enhanced Raman spectroscopy as a technique capable of very efficient inter-molecular interactions the detection of trace substances, adsorption behavior characterization tool surface molecules and molecular structure, has been widespread attention at home and abroad.

[0003] 经对现有文献检索发现,目前国内外用于增强拉曼光谱的方法主要有三种:第一种为采用液芯光纤(LCOF)系统进行拉曼光谱增强,这种方法的优点是可以大大增加光与物质的相互作用距离,从而显著提高光谱信号强度和探测极限。 [0003] The existing literature search was found that the current method for enhanced Raman spectroscopy abroad there are three: a first enhanced Raman spectroscopy employing liquid core optical fiber (LCOF) system, advantage of this method is interaction distance greatly increasing light and matter, thus significantly improve the signal intensity and spectral detection limit. 但是LCOF方法要求待测物质一般为液体(溶液),且需注入到液芯光纤中作其纤芯,因此要求待测物质的折射率须大于光纤包层折射率,而目前大部分液体物质,如水溶液的折射率都要比常规光纤包层(玻璃)的折射率小,所以这种方法在实际应用中具有很大的局限性。 The method of claim LCOF test substance but normally a liquid (solution), and the need to inject the liquid core optical fiber as its core, thus requiring the test substance must be greater than the refractive index of the cladding an optical fiber, and now most of the liquid substance, the refractive index of the aqueous solution to be smaller than the refractive index of conventional fiber cladding (glass), so that this method has serious limitations in practical applications. 第二种增强方法是利用共振拉曼效应(RR),当入射激光频率对应于被检测物质分子的电子吸收能级时,拉曼跃迁几率大大增加,使得分子的某些振动模式的拉曼散射截面增强,共振拉曼增强方法可以得到IO5-1O5的增强因子,使亚单层量分子检测成为可能,可用于低浓度和微量样品检测,如生物大分子样品的检测。 The second method is to use a resonant Raman enhancement effect (RR), when the incident laser frequency corresponds to the molecules of the substance to be detected energy level of the electron absorption, Raman transition probability greatly increased, so that certain vibrational modes of the molecular Raman scattering sectional enhanced resonance Raman enhancement factor IO5-1O5 methods may be enhanced, so that the amount of alkylene single molecule detection becomes possible, for low concentrations and trace sample testing, such as the detection of large biomolecules. 但是目前只有少数待测物质分子的电子吸收能级可与现有激光相匹配,即共振拉曼增强技术存在激光波长有限,适应性差的缺点。 However, currently only a small number of test substance molecule electron absorption energy level can be matched to an existing laser, i.e., resonance Raman laser wavelength limited enhancement techniques exist, a disadvantage of poor adaptability.

[0004] 第三种方法是表面增强拉曼光谱(SERS)技术,这是目前为止使用最广的一种增强拉曼光谱技术,即利用金属表面局域等离子激元所引起的电磁增强,使被检测物质的拉曼散射产生增强,增强因子可达IOe ,甚至更高,SERS技术使拉曼光谱的应用进入微量物质单分子探测领域。 [0004] The third method is surface-enhanced Raman spectroscopy (SERS) technology, which is by far the most widely enhanced Raman spectroscopy, electromagnetic i.e. a metal surface plasmons localized enhancement caused by the substance to be detected Raman scattering enhancement, enhancement factor IOE up to, or even higher, the SERS spectra of Raman technology to make the single-molecule detection of trace substances into the field. 但SERS也有其缺点,一为SERS技术具有高选择性,即对于不同种类待测物质,其所使用的SERS基底芯片也是不同的,而目前尚未建立两者明确的配对关系,这造成使用SERS技术存在一定困难。 SERS but also has its disadvantages, a high selectivity for the SERS technique, i.e. for different kinds of the substance, they use are different SERS substrate chip, but has yet to establish both a clear pairing relationship, which results in the use of SERS technique there are certain difficulties. 其次,SERS基底芯片一般具有纳米结构,使用时容易暴露于空气中,受到环境因素的影响损坏而失去其增强拉曼光谱功能,且SERS基底芯片不能循环使用,也很难实现实时及动态在线SERS检测。 Second, the general SERS substrate chip having a nanostructure, is easy to use when exposed to air, damaged by environmental factors lose their function-enhanced Raman spectroscopy, SERS substrate and the chip can not be recycled, and it is difficult to achieve real-time dynamic online SERS detection.

发明内容 SUMMARY

[0005] 本发明针对现有拉曼光谱增强技术的不足,提供一种基于光波导振荡场传感器结构的拉曼光谱增强装置。 [0005] The present invention enhances the existing technical deficiencies Raman spectroscopy, Raman spectroscopy is provided a waveguide-based sensor structure oscillating field enhancement device. 通过将样品注入到装置的中间层玻璃层样品室作为光波导振荡场传感器的导波层,入射光在样品中呈Z字形路径传播,增加了光与物质(样品)的作用距离且其中光功率密度很大,可极大地增强样品的拉曼散射光强,实现拉曼光谱增强的目的。 By injecting the sample into a glass layer to the intermediate layer, the sample chamber of the device as an optical waveguide layer of the waveguide oscillating field sensor, the incident light propagation in the Z-shaped sample, increase the effect of light and matter (sample) and wherein a distance optical power great density, greatly enhanced Raman scattering intensity of the sample, to achieve the purpose of enhanced Raman spectroscopy. 中间层玻璃层制作有圆柱形导流槽,可实现待测样品的实时动态在线拉曼光谱检测。 Layer intermediate layer made of glass with a cylindrical guide groove, enabling real-time dynamic sample to be measured Raman spectrum detection line. 且上下两层玻璃都镀有金属膜,样品处于上下两层金属膜之间,避免了液芯光纤拉曼光谱增强系统的要求样品折射率大于包层玻璃折射率的缺点,拓宽了其应用范围。 And two layers of glass are coated with a metal film, the sample is between upper and lower layers of the metal film, avoids the disadvantages of liquid core optical fiber Raman spectrum enhancement system requires that the sample is greater than the refractive index of the cladding of the glass, it broadens the scope of its application . 本装置结构简单,易于实现且成本低廉。 This device structure is simple, easy to implement and inexpensive.

[0006] 本发明是通过以下技术方案实现的,它包括耦合棱镜、耦合棱镜底面金属膜、下层玻璃金属膜、下层玻璃层、中间层玻璃层,其特征在于:下层玻璃层、中间层玻璃层和耦合棱镜从下至上依次紧密贴合连接,所述耦合棱镜的底面连有耦合棱镜底面金属膜,所述下层玻璃层连有下层玻璃金属膜。 [0006] The present invention is achieved by the following technical solutions, including coupling prism, coupling prism bottom surface of the metal film, the lower glass metal film, the lower glass layer, an intermediate layer, a glass layer, characterized in that: the lower glass layer, an intermediate layer, a glass layer coupling prism and from bottom to top in close contact with the connection, the bottom surface of the coupling prism attached with a coupling prism bottom surface of a metal film, the lower layer is connected with a lower glass glass metallic film.

[0007] 所述耦合棱镜是三角棱镜或者圆柱形柱面镜中的一种。 The [0007] coupling prism is a triangular prism or a cylindrical mirror is cylindrical.

[0008] 所述的耦合棱镜底面金属膜是金膜、银膜或者铜膜中的一种,膜厚为3(T50nm。 [0008] The bottom surface of the coupling prism metal film is a gold film, silver film or copper film, a film thickness of 3 (T50nm.

[0009] 所述中间层玻璃层中心位置处有一个样品池,样品池形状为圆形或者方形中的一种。 Layer at a center position of [0009] the intermediate layer has a glass sample cell, the sample cell shape of a round or square.

[0010] 所述的中间层玻璃层两侧壁中心位置之间设有一个圆柱形槽孔,圆柱形槽孔与样品池相通,样品池的一侧的圆柱形槽孔为样品流入口,样品池的另一侧的圆柱形槽孔为样品回流口。 With [0010] the intermediate layer between the glass layers on both sides wall of the central position of a cylindrical slot, the cylindrical sample cell communicates with the slot, the slot side of the cylindrical sample cell for a sample inlet, the sample slots on the other side of the cylindrical sample cell return port. 可与导流软管配合使用,实现注入及回流待测样品的目的。 It can be used with the catheter tube, and a reflux purposes of injecting sample to be tested.

[0011] 所述的下层玻璃金属膜是金膜、银膜或者铜膜中的一种,膜厚为10(T300nm。 Lower glass metal film [0011] according to a gold film, silver film or copper film, a film thickness of 10 (T300nm.

[0012] 所述的耦合棱镜、中间层玻璃层和下层玻璃层可通过光胶法或者分子吸附力法来粘合。 [0012] the coupling prism, the intermediate layer and the glass layer, the lower glass layer may be bonded by an optical gel method or molecular adsorption force method.

[0013] 所述中间层玻璃层和下层玻璃层都采用方形光学玻璃。 [0013] The intermediate glass layer and the lower layer of glass layers with a square optical glass.

[0014] 所述稱合棱镜、中间层玻璃层与下层玻璃层。 [0014] The bonding said prism, the intermediate layer and the glass layer, the lower glass layer. 其中稱合棱镜在其底面镀有一层金属膜,中间层玻璃层和下层玻璃层都采用方形光学玻璃,中间层玻璃层挖出一个样品池,其中心线位置切出一个圆柱形槽,作为注入及回流待测样品之用,下层玻璃层的上表面也镀上金属膜,可与中间层玻璃层样品室匹配。 Wherein said prism bonded on its bottom surface coated with a metal film, the intermediate layer and the lower layer of glass with a square glass optical glass layers, the intermediate layer is a glass layer dug cuvette, a cut position of the center line of the cylindrical grooves, as an implantation and the return of the sample to be tested, the glass surface of the lower layer is also plated on the metal film, the intermediate layer can be matched with the glass layer of the sample chamber. 本发明通过将样品注入到中间层玻璃层样品室作为光波导振荡场传感器的导波层,入射光在样品中呈Z字形路径传播,增加了光与待测物质的作用距离且其中光功率密度很大,可极大地增强样品的拉曼散射光强。 The present invention, by injecting the sample into the sample chamber an intermediate layer of a glass layer as an optical waveguide layer of an oscillating field sensor, the incident light propagation in the Z-shaped sample, increase the effect of the test substance with the light from the light power density and wherein large sample can greatly enhance Raman scattering intensity.

[0015] 本发明的工作原理是:将待测样品通过中间层玻璃层的圆柱形槽注入到样品室中,作为光波导振荡场传感器的导波层。 Working Principle [0015] The present invention is: The sample to be tested via a cylindrical groove of the intermediate layer is injected into the glass layer of the sample chamber, the waveguide layer as an optical waveguide sensor of the oscillating field. 入射激光通过耦合棱镜耦合进入导波层并在其中传播,传播路径为Z字形,这可大大增加光与待测样品的作用距离,并且样品处于光波导的导波层而不是消逝层中,其中光功率密度很大,因此可极大增强待测样品的拉曼光强,达到拉曼光谱增强的目的。 The incident laser light entering through the coupling prism coupling waveguide layer and propagates, the propagation path is Z-shaped, which can greatly increase the effect of light from the sample to be tested, and the sample in the waveguide layer instead of the optical waveguide layer disappeared, wherein power density is large, and therefore the light intensity can be greatly enhanced Raman sample to be tested, to achieve the purpose of enhanced Raman spectroscopy.

[0016] 与现有技术相比,本发明的有益效果是:1、本发明装置基于光波导振荡场传感器结构,待测样品处于两层金属膜之间,而金属膜的有效折射率为负值,绝大部分待测样品的折射率为正值,这表明样品折射率不受限制,可突破液芯光纤拉曼光谱增强方法的应用局限,大大拓宽待测样品的适用范围,这对水溶液环境、接近自然状态下的物质检测研究是十分有利的。 [0016] Compared with the prior art, the beneficial effect of the invention is: 1, the optical waveguide device of the present invention an oscillating field sensor arrangement, the sample is between two metallic films, the effective refractive index of the metal film as a negative value, the refractive index of the majority of the samples tested positive, indicating that the refractive index of the sample is not limited, liquid core optical fiber can break enhanced Raman spectroscopy application the limitations of the method, significantly broadening the scope of application of the sample to be tested, which is an aqueous solution environment, proximity detection research material natural state is very favorable. 2、本发明装置中的样品室设计有圆柱形导流槽,可作为待测样品的注入口和回流口,配合导流软管一起使用,可方便满足对待测样品的实时、动态在线检测要求。 2, the apparatus of the present invention, the sample chamber is designed with a cylindrical guide groove can be used as inlet and return port sample to be tested, used together with the catheter tube, can easily meet real-time, dynamic line detection of the sample to be measured . 3、本发明装置中的待测样品可直接与金属膜接触,如在金属膜上制备出特定的纳米结构,则可在本结构中进一步实现表面拉曼光谱增强(SERS),并且金属膜处于光波导振荡场传感器的内部,使用时无需暴露于空气,避免了目前SERS基底芯片使用时容易被环境因素影响损坏而失去拉曼光谱增强功能的缺点。 3, the device according to the present invention in the test sample may be in direct contact with the metal film, as prepared in the specific metal nanostructure film can be further enhanced to achieve surface Raman spectroscopy (SERS) in this structure, and the metal film is oscillating field sensor inside the optical waveguide, when used without being exposed to air, avoiding the easily damaged environmental factors influence the current lost SERS substrate chip using enhanced Raman spectroscopy disadvantages function.

附图说明 BRIEF DESCRIPTION

[0017] 图1为本发明结构示意图; [0017] Figure 1 is a schematic structural diagram of the invention;

图2为耦合棱镜的结构示意图; FIG 2 is a schematic view of the coupling prism;

图3为中间层玻璃层的结构示意图; 3 is a schematic structure of the intermediate layer of the glass layer;

图4为下层玻璃层的结构示意图; FIG 4 is a schematic view of the lower glass layer;

图5为罗丹明6G溶液拉曼光谱增强示意图; FIG 5 is a Raman spectrum of Rhodamine 6G was enhanced schematic;

图6为氨基甲酸乙酯溶液拉曼光谱增强示意图; 6 is a urethane solution schematic enhanced Raman spectroscopy;

其中:1、稱合棱镜;2、稱合棱镜底面金属膜;3、样品流入口;4、下层玻璃金属膜;5、下层玻璃层;6、样品回流口;7、中间层玻璃层;8、样品池。 Wherein: 1, said co prism; 2, said engagement prism bottom surface of the metal film; 3, sample stream inlet; 4, the lower glass metal film; 5, the lower glass layer; 6, sample return port; 7, the intermediate layer, a glass layer; 8 sample cell.

具体实施方式 Detailed ways

[0018] 下面对本发明的实施例作详细说明,本实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施例。 [0018] Hereinafter, embodiments of the present invention will be described in detail, the present embodiments In order aspect of the present invention is a premise is given and the specific operation detailed embodiments, but the scope of the present invention is not limited to the Example embodiments described below.

[0019] 实施例1 [0019] Example 1

如图1所示,本发明是这样实现的,下层玻璃层5、中间层玻璃层7和耦合棱镜I从下至上依次紧密贴合连接,所述耦合棱镜I的底面连有耦合棱镜底面金属膜2,所述下层玻璃层5连有下层玻璃金属膜4。 1, the present invention is achieved, the lower the glass layer 5, the intermediate layer and the glass layer 7 are sequentially oriented coupling prism I in close contact from the connector, the coupling prism bottom surface connected with a coupling prism I bottom surface of the metal film 2, the lower glass layer 5 is connected with a lower glass metallic film 4. 所述耦合棱镜I是三角棱镜或者圆柱形柱面镜中的一种。 I said coupling prism is a triangular prism or a cylindrical mirror is cylindrical. 所述的耦合棱镜底面金属膜2是金膜、银膜或者铜膜中的一种,膜厚为3(T50nm。所述中间层玻璃层7中心位置处有一个样品池8,样品池形状为圆形或者方形中的一种。所述的中间层玻璃层7两侧壁中心位置之间设有一个圆柱形槽孔,圆柱形槽孔与样品池8相通,样品池8的一侧的圆柱形槽孔为样品流入口3,样品池8的另一侧的圆柱形槽孔为样品回流口6。可与导流软管配合使用,实现注入及回流待测样品的目的。所述的下层玻璃金属膜4是金膜、银膜或者铜膜中的一种,膜厚为10(T300nm。所述的耦合棱镜1、中间层玻璃层7和下层玻璃层5可通过光胶法或者分子吸附力法来粘合。 The bottom surface of the coupling prism metal film 2 is a gold film, silver film or copper film, at a thickness of 7 center position 3 (T50nm the intermediate layer is a layer of glass cuvette 8, the sample cell shape in a round or square. the intermediate layer is provided between a glass layer 7, the center position of a cylindrical side walls of the slot, the cylindrical sample cell 8 in communication with the slot, the cylindrical side of the sample cell 8 shaped slot to the other side of the sample stream inlet 3 of the sample cell 8, a cylindrical sample return opening 6. slot can be used with catheter tube, and a reflux purposes of injecting sample to be tested. the lower layer 4 is a glass-metal film gold film, silver film or copper film, a film thickness of 10 (T300nm. 1 of the coupling prism, the intermediate layer 7 and the lower glass layer may be adsorbed by the glass layer 5 light gel method or molecular force method to bond.

[0020] 如图2所示,所述的圆柱形柱面镜,底面长3.8cm,宽2.1cm,柱面直径2.1cm。 As shown in [0020] FIG. 2, the cylindrical mirror is cylindrical, the bottom surface 3.8cm long, 2.1cm wide, cylindrical diameter of 2.1cm. 通过磁控派射机在其底面镀有一层金膜,厚度为30nm,作为光波导振荡场传感器的稱合层。 Sent by the transmitter magnetron plated on its bottom surface with a layer of gold film having a thickness of 30 nm, an optical waveguide, said oscillating field sensor seal layer.

[0021] 如图3所示,所述的中间层玻璃层采用方形光学玻璃,长3.8cm,宽2.1cm,高 [0021] As shown in FIG. 3, the intermediate layer is a glass layer with a square optical glass, 3.8cm long, 2.1cm wide, high

0.5cm。 0.5cm. 在其中心位置挖出一个圆形样品池,直径1.6cm,并切出一个直通的圆柱形槽,圆柱形槽直径0.15cm,配合导流软管以作注入及回流待测样品之用。 Dug in its central position a circular sample cell, the diameter of 1.6cm, and a cut through the cylindrical groove, 0.15cm diameter cylindrical groove, for mating with the implanted catheter tube to reflux and samples tested.

[0022] 如图4所示,所述的下层玻璃层采用方形光学玻璃,长3.8cm,宽2.1cm,高0.9cm。 [0022] As shown in FIG 4, the lower glass layer with a square optical glass, 3.8cm long, 2.1cm wide, high 0.9cm. 通过磁控溅射机在其上表面镀有一层圆形金膜,金膜厚度200nm,直径1.6cm,可与圆形样品池匹配。 Circular film coated with a layer of gold, a gold film thickness of 200 nm, a diameter of 1.6cm, round cells can be matched by a magnetron sputtering machine on the surface thereof.

[0023] 如图1所示,所述的圆柱形柱面镜,所述的中间层玻璃层和所述的下层玻璃层直接通过彼此的分子吸附力贴合,以最大限度地保证光波导振荡场传感器各层玻璃的平行度。 [0023] As shown, the cylindrical mirror is cylindrical, the intermediate layer and the glass layer, the glass layer is the lower molecular attraction force is directly bonded to each other to ensure maximum oscillation of the optical waveguide 1 the layers of parallel glass field sensor. [0024] 图5是本实施例的增强拉曼光谱图,本实施例使用的待测样品是罗丹明6G溶液 [0024] FIG. 5 is enhanced Raman spectra embodiment of the present embodiment, the test sample used in the present embodiment is a solution of rhodamine 6G

(RH6G),浓度为100 PM ,入射激光波长为633nm,功率5mW。 (RH6G), at a concentration of 100 PM, the incident laser wavelength of 633nm, power 5mW. 下图为无增强拉曼光谱,上图 The following figure shows non-enhanced Raman spectroscopy, the FIG.

为通过本发明装置增强的拉曼光谱,对比上下图,此实施例中本发明装置的拉曼增强因子为14。 The present invention is a Raman enhanced Raman spectroscopy apparatus, FIG down by comparison, in this example embodiment of the present invention, the enhancement factor for the apparatus 14.

[0025] 实施例2 [0025] Example 2

本实施例的实施方式和实施例1相同。 Example embodiments of the present embodiment and the same as in Example 1.

[0026] 图6是本实施例的增强拉曼光谱图,本实施例使用的待测样品是氨基甲酸乙酯溶液,浓度为60 μΜ ,入射激光波长为650nm,功率10mW。 [0026] FIG. 6 is enhanced Raman spectrum of the present embodiment, the test sample used in the present embodiment is a urethane solution, at a concentration of 60 μΜ, the incident laser beam having a wavelength of 650nm, power 10mW. 下图为无增强拉曼光谱,上图为通过本发明装置增强的拉曼光谱,对比上下图,此实施例中本发明装置的拉曼增强因子为16。 The following figure shows non-enhanced Raman spectroscopy, the device of the invention by the picture shows enhanced Raman spectroscopy, FIG vertical comparison, the present embodiment apparatus of this embodiment of the invention, Raman enhancement factor of 16.

Claims (8)

  1. 1.一种基于光波导振荡场传感器的拉曼光谱增强装置,它包括耦合棱镜、耦合棱镜底面金属膜、下层玻璃金属膜、下层玻璃层、中间层玻璃层,其特征在于:下层玻璃层、中间层玻璃层和耦合棱镜从下至上依次紧密贴合连接,所述耦合棱镜的底面连有耦合棱镜底面金属膜,所述下层玻璃层连有下层玻璃金属膜。 A Raman spectrum in the optical waveguide sensor oscillating field enhancement device which comprises a coupling prism, coupling prism bottom surface of the metal film, a metal film of the lower glass, lower glass layer, an intermediate layer, a glass layer, characterized in that: the lower glass layer, glass layer and the intermediate layer coupling prism from bottom to top in close contact with the connection, the bottom surface of the coupling prism attached with a coupling prism bottom surface of a metal film, the lower layer is connected with a lower glass glass metallic film.
  2. 2.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述耦合棱镜是三角棱镜或者圆柱形柱面镜中的一种。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: said coupling prism is a triangular prism or a cylindrical mirror is cylindrical.
  3. 3.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述的耦合棱镜底面金属膜是金膜、银膜或者铜膜中的一种,膜厚为3(T50nm。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: said coupling prism bottom surface of the metal film is a gold film, silver film or copper film, the film thickness 3 (T50nm is.
  4. 4.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述中间层玻璃层中心位置处有一个样品池,样品池形状为圆形或者方形中的一种。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: said layer at a center position of the intermediate layer has a glass sample cell, the sample cell is circular in shape or a square in one kind.
  5. 5.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述的中间层玻璃层两侧壁中心位置之间设有一个圆柱形槽孔,圆柱形槽孔与样品池相通,样品池的一侧的圆柱形槽孔为样品流入口,样品池的另一侧的圆柱形槽孔为样品回流口。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: a cylindrical slot with the intermediate layer between the glass layers on both sides wall of the central position, a cylindrical sample cell communicates with the slot, the slot side of the cylindrical sample cell for a sample inlet, a cylindrical slot on the other side of the sample cell sample return port.
  6. 6.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述的下层玻璃金属膜是金膜、银膜或者铜膜中的一种,膜厚为10(T300nm。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: said underlayer film is a metal glass gold film, silver film or copper film, a film thickness 10 (T300nm.
  7. 7.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述的耦合棱镜、中间层玻璃层和下层玻璃层可通过光胶法或者分子吸附力法来粘合。 The oscillating field sensor based on the optical waveguide of the Raman spectrum enhancement apparatus of claim 1, wherein: said coupling prism, the intermediate glass layer and the lower layer may be a glass layer by light suction force law or molecular gel method to bond.
  8. 8.根据权利要求1所述的基于光波导振荡场传感器的拉曼光谱增强装置,其特征在于:所述中间层玻璃层和下层玻璃层都采用方形光学玻璃。 The optical waveguide according to claim oscillating field sensor based on a Raman spectrum enhancement apparatus of claim 1, wherein: said intermediate layer and the lower layer of glass layers with a square glass optical glass.
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